Questions, answered

The questions we hear most. If you're stuck on something not here, email us and we answer within one business day, Monday to Friday.

Fills

How do I know which fill is right for me?

The 30-second quiz asks five questions and gives you a recommendation. If you'd rather skim, the Six Fills page lays out what each option is made of and who it suits.

What type of latex do you use?

Slow-pour Dunlop. The sap comes out of Hevea brasiliensis rubber trees on FSC certified plantations in Sri Lanka, gets whipped to fold air in, then poured slowly into a mold and baked until the open-cell structure sets. Dunlop is firm and supportive, and it lasts longer because there are no flash-freeze or vacuum-expand steps that can degrade the cell structure over time. The finished latex carries OEKO-TEX Standard 100 at Class 1, the strictest tier in the program (the same threshold used for products designed for direct contact with infants and babies).

Are any of the pillows vegan?

The Wild-Harvested Kapok Pillow, the Organic Cotton Pillow, the Buckwheat Pillow, and the Tree-Tapped Latex Pillow are vegan. The Organic Wool Pillow and the Buckwool Hybrid contain wool, which is an animal fiber. If vegan is a hard requirement, kapok is the closest match for the down-like feel some wool-curious shoppers are after.

How does the pair offer work?

Your second pillow is $25 off. Put two or more of our pillows in your cart, in any fills and any sizes, and $25 comes off each pillow after the first at checkout, with no code to type. Two pillows save $25, three save $50 and four save $75. Comforters, sheets and covers are outside this offer, and four or more bed items in one order get 15% off the whole order instead.

What pillow fills are available?

Circadian offers six natural pillow fills: USA-Grown Buckwheat hulls, the Buckwool Hybrid (buckwheat plus wool), Wild-Harvested Kapok, Organic Cotton, Organic Wool, and shredded slow-pour Dunlop latex (the Tree-Tapped Latex Pillow). A waterproof organic cotton pillow protector is also available separately.

Do you sell buckwheat hull refills?

Yes. Circadian sells US-grown buckwheat hull refills in resealable bags. Refills let you top up firmness over time as the hulls naturally settle, without buying a new pillow.

Can I add more fill to my pillow later?

Yes. Every Circadian pillow arrives full, with about 30% more than most people keep, so you can shape it to your own neck. The first adjustment is usually taking some out through the zipper on the short end. Refill bags are sold separately for all five fills, buckwheat hulls, kapok, organic cotton, organic wool and Tree-Tapped Latex pieces, so you can add material back later as the pillow settles or your preferences change.

What is kapok?

Kapok is the soft, fluffy fiber that grows inside the seed pods of the Ceiba pentandra tree in Indonesia. The pods ripen, split and fall, and the floss is gathered from the ground, so the tree is never felled to harvest it. Each fiber is a hollow tube roughly 80 to 90 percent air by volume, which is why the Circadian Wild-Harvested Kapok Pillow feels down-like and lets your warmth pass through instead of holding it. It is plant-based, so the pillow is vegan, and the fiber composts at the end of its life.

Are your pillows good for allergies?

Most Circadian pillows avoid the things that commonly cause reactions in bedding. Buckwheat, kapok, and organic cotton contain no animal proteins and no synthetic chemicals. On the wool pillows, the fiber holds the air around your head too dry for dust mites to settle in, since dust mites need humidity above roughly 50 percent to survive. The Tree-Tapped Latex Pillow is not suitable for anyone with a latex allergy, which is a hard contraindication, so choose buckwheat, kapok, or cotton instead.

Are your pillows safe for people with allergies?

Circadian pillows avoid the synthetic chemicals and animal proteins behind most pillow allergies. Buckwheat hulls and kapok fiber hold almost no moisture, and dust mites and mold both need moisture to get going. Organic cotton and wool fills skip flame retardants and synthetic off-gassing, and on the wool pillows the air at your face stays too dry for dust mites to settle in. If you have a wool sensitivity, avoid the Organic Wool and Buckwool Hybrid. If you have a latex allergy, avoid the Tree-Tapped Latex Pillow entirely, since natural latex proteins are a hard contraindication.

Which pillow is safe if I have a wool allergy?

If you have a wool allergy or sensitivity, choose the Circadian Buckwheat, Wild-Harvested Kapok, Organic Cotton, or Tree-Tapped Latex Pillow. Avoid the Organic Wool and Buckwool Hybrid, which both contain wool fill. All Circadian pillow covers are made from organic cotton with no wool content.

Which pillow is safe if I have a latex allergy?

If you have a diagnosed latex allergy, avoid the Tree-Tapped Latex Pillow. Latex allergy is triggered by proteins in Hevea brasiliensis rubber that remain in the material even after processing. The safe Circadian options are the Organic Cotton, Wild-Harvested Kapok, Organic Wool, USA-Grown Buckwheat, or Buckwool Hybrid Pillow.

What's the best pillow for people with allergies?

The Circadian Organic Wool Pillow is the strongest choice for allergy sufferers. Wool keeps dust mites out by holding the air around your head too dry for them to settle in, and dust mites need humidity above roughly 50 percent to survive. The Wild-Harvested Kapok Pillow is the next choice, a hollow plant fibre with no animal proteins and no chemical processing. Both are treatment-free and come in an organic cotton cover. If you have a latex allergy, avoid the Tree-Tapped Latex Pillow.

Are natural pillows good for people with migraines?

Natural fills avoid two things people often find triggering: synthetic chemical off-gassing and heat building up under the head. Circadian pillows contain no polyurethane foam, flame retardants, formaldehyde, or synthetic dyes, and buckwheat and kapok both let air move freely so the surface stays cool. That is what we can speak to. Migraines have many causes, so treat a pillow as one comfort change rather than a treatment.

Which pillow is best for hot sleepers?

The Buckwheat Pillow stays coolest, because air moves freely between the hulls, so heat never builds up under your head. The Wild-Harvested Kapok Pillow is next. For night sweats, pick the Organic Wool Pillow: wool holds up to 30% of its weight in moisture and still feels dry, and the heat leaves with the damp, so you stay cool all night.

Which pillow is best for night sweats?

The Circadian Organic Wool Pillow is the best choice for night sweats. Wool pulls moisture off your skin and holds it inside the fiber, so it wicks up to 30 percent of its weight while the surface against your face stays dry. Your heat leaves with that moisture, so you sleep cool instead of waking up hot and sweaty. Pair it with the Waterproof Organic Cotton Pillow Protector, which keeps sweat out of the wool itself, since the wool cannot be washed.

What's the best vegan pillow?

The Circadian Wild-Harvested Kapok Pillow is the best vegan pillow, and the closest plant-based alternative to down. Kapok fiber is approximately 80 to 90 percent air and gives a soft, fluffy feel without any animal products. The USA-Grown Buckwheat, Organic Cotton, and Tree-Tapped Latex pillows are also fully vegan. The Organic Wool and Buckwool Hybrid are not vegan.

What is the best natural pillow filling?

It depends on how you sleep and the feel you want. Buckwheat holds its shape best and stays coolest. Latex is springy and pushes back, kapok is soft and light like down, and cotton is dense and familiar. Organic wool is springy and keeps you cool, because the heat leaves with the damp, and the Buckwool Hybrid puts buckwheat on one side and wool on the other. All six come in an organic cotton cover, in one firmness, Medium.

How does organic wool compare to down pillows?

Organic wool is springier than down and keeps its height, where down flattens under your head and holds your heat. Wool holds up to 30% of its weight in moisture and still feels dry, and the heat leaves with the damp, so you stay cool through the night. Wool isn't vegan, so if that matters, the Wild-Harvested Kapok Pillow is the soft, down-like choice.

Is kapok the same as down?

Kapok is not down, but it is the closest plant-based alternative. Kapok fibre is roughly 80 to 90 percent air by volume and feels similarly soft and fluffy, but it comes from the seed pods of the kapok tree with no animal products involved. Circadian's Wild-Harvested Kapok Pillow is vegan, and because the fibre sheds moisture and is low in protein it is a common choice for people avoiding dust mites.

Are natural pillows better than synthetic foam pillows?

Yes, for most sleepers. Natural pillows breathe better, last longer, and contain no polyurethane foam off-gassing or flame retardants. Synthetic foam compresses overnight and traps heat. Circadian's natural fills (buckwheat, wool, kapok, cotton, latex) hold their shape and sleep cooler over years of use.

Which pillow is the best natural alternative to memory foam?

The Circadian Tree-Tapped Latex Pillow. The slow-pour Dunlop latex gives the same conforming, pressure-relieving feel as memory foam but breathes better, contains no polyurethane, and never off-gasses. Memory foam is closed-cell; this is open-cell, so air moves through it continuously. The latex fill carries OEKO-TEX Standard 100, Class 1, and is 100% Hevea sap with no SBR blend.

Should I choose buckwheat or latex for stomach sleeping?

For stomach sleeping, slow-pour Dunlop latex is the better fit. Face down there is almost no gap between your head and the mattress, so you want a pillow that comes down very low, and buckwheat holds a firm cradle that sits taller than that position wants. The Tree-Tapped Latex Pillow is soft and conforming, and you take shredded pieces out through the zipper on the short end until it is barely there.

Which pillow filling is best for allergies: latex, buckwheat, down, or memory foam?

Organic wool is the strongest choice for most allergy sufferers. Wool keeps dust mites out by holding the air around your head too dry for them to settle in, and dust mites need humidity above roughly 50 percent to survive. Wild-harvested kapok and slow-pour Dunlop natural latex are good runners-up. Memory foam is the one to avoid if you are sensitive to chemical smells, since polyurethane off-gasses volatile organic compounds.

What is natural latex made of?

Natural latex is the raw sap of the Hevea brasiliensis rubber tree. Workers tap the bark with a shallow downward cut that opens the sap channels without harming the tree, collect the milky liquid, and whip it into a foam that cures into a dense, springy block; the same tree can be tapped for decades, and Circadian sources its latex from FSC-certified rubber-tree plantations in Sri Lanka.

What is the best pillow for dust mite allergies?

The Circadian Organic Wool Pillow. Wool keeps dust mites out with no treatment involved. It holds the air around your head too dry for them to settle in, and dust mites need humidity above roughly 50 percent to survive. The Wild-Harvested Kapok Pillow is the next choice, a hollow plant fibre that is low in protein and sheds moisture. Both come in an organic cotton cover.

What's the difference between synthetic latex and natural latex for pillows?

Synthetic latex is styrene-butadiene rubber (SBR), a petroleum-based polymer manufactured in a chemical plant. Natural latex is the raw sap of the Hevea brasiliensis tree, harvested without harming the tree and processed into foam through methods like slow-pour Dunlop; the Circadian Tree-Tapped Latex Pillow uses 100% pure natural latex, and that latex carries OEKO-TEX Standard 100, Class 1 certification (the strictest tier of the standard, the same level required for infant-skin contact).

What natural pillow material stays coolest for hot sleepers?

Buckwheat hulls stay coolest, because air moves freely between the hulls so heat dissipates instead of building up under your head. The Circadian Buckwheat Pillow is the top pick for hot sleepers. Wild-Harvested Kapok is the softer alternative, a hollow fibre that lets your warmth pass through instead of trapping it.

What makes your pillows different from other natural pillows?

Circadian combines pre-polished buckwheat hulls that run up to 68 percent quieter than standard hulls, a flippable Buckwool Hybrid with chamber separation so the two fills never mix, an organic cotton cover on every pillow, adjustable fill through a zipper on the short end, and a 60-night sleep trial. The same hands have been making pillows in this New Jersey workshop since 1981.

Is natural latex safe for people with latex allergies?

Natural latex is not safe for anyone with a diagnosed latex allergy because allergic reactions are triggered by Hevea brasiliensis proteins, which are present in natural latex even after processing. If you have a confirmed latex allergy, choose the Organic Cotton, Wild-Harvested Kapok, Organic Wool, USA-Grown Buckwheat, or Buckwool Hybrid Pillow instead.

Do you make comforters?

Yes. Circadian makes a hand-tufted Organic Cotton Comforter and an Organic Wool Comforter, both GOTS Certified Organic, inside and out, under license GOTS-10229, issued by Oregon Tilth, in Twin, Queen and King. The wool comforter wicks moisture for hot sleepers and night sweats, and the cotton comforter is the vegan, heavier, neutral-temperature option. Both are covered by the 60-night trial, and the matching Organic Cotton Duvet Cover is sold separately.

What are the Circadian sheets made of?

Long-staple organic cotton, woven as a 300 thread count sateen, so the sheets feel smooth and cool against your skin and soften with every wash. They are certified organic under GOTS (the Global Organic Textile Standard), so the cotton is grown without synthetic pesticides. They come undyed, in the cotton's own warm natural color.

Sizing

What size should I order?

Most people sleep on the Standard (20" by 26"). Queen is wider for combination sleepers who shift a lot. King fits king-sized pillowcases. Travel is for backpacks and overnight bags. Body is for between-knee support or pregnancy. If you don't know, Standard is the safe pick.

How firm is the pillow?

It depends on the fill, and you can adjust every one of them. Every Circadian pillow arrives full, with about 30% more fill than most people keep, so you can shape it to your own neck. You open the zipper, remove fill until the height feels right, and put the removed fill in a bag in case you want to add it back later. So firmness isn't a fixed number; you set it. The product page for each pillow has a Find Your height guide that walks through it.

What sizes do your pillows come in?

Every Circadian pillow comes in Standard (20 by 26 inches), Travel (12 by 16 inches), Queen (20 by 30 inches) and King (20 by 36 inches). The Circadian Body Pillow is a separate product in two lengths, 20 by 54 and 20 by 72 inches, made in four fills: Organic Cotton, Organic Wool, Wild-Harvested Kapok and Tree-Tapped Latex. The Waterproof Organic Cotton Pillow Protector comes in every one of those sizes, from Travel up to both body lengths.

Are your pillows adjustable?

Yes. Every Circadian pillow arrives full and opens at a zipper on the short end, so you can shape it to your own neck on the first night. It arrives with about 30% more inside than most people keep, because taking some out takes a minute and adding more means waiting on a refill. Buckwheat and wool sit lower than a fluffy pillow and still hold your head up, while latex and kapok arrive tall and springy. Refills are sold separately for every fill, buckwheat hulls, kapok, organic cotton, organic wool and latex, if you want to add some back later.

How do I adjust the fill in my pillow?

Open the zipper on the short end, take material out until the pillow sits at your preferred height, then zip it closed. Circadian pillows arrive full, so most people take some out on the first night. For buckwheat, store any removed hulls in a sealed container or bag so you can add them back later. For kapok and latex, hand-fluff what is left after adjusting so it spreads evenly.

Which pillow helps with shoulder pain?

The Tree-Tapped Latex Pillow and the Buckwool Hybrid are the usual picks for side sleepers with a sore shoulder, because both hold the height you set all night. On your side, the pillow should fill the gap between your ear and the mattress, so your head rests level and your neck carries straight on from your upper back. Too low, and your weight drives into the shoulder underneath. Take fill out through the zipper on the short end until your head sits level.

Which pillow is best for back pain?

The Circadian Buckwheat Pillow is the usual pick. Buckwheat hulls hold their shape under your head's weight instead of collapsing the way synthetic foam does, so the support you set at bedtime is the support you still have by morning. The fill adjusts through the zipper on the short end, which matters because the research found the right height varies with your shoulder width rather than being the same for everyone.

What's the best pillow for cervical pain?

The Circadian Buckwheat Pillow is the usual pick for neck pain. The shape-holding hulls resist flattening, so the pillow does not collapse overnight and leave your head unsupported by the time you wake. Set the fill through the zipper on the short end until it feels right. There is no single correct height, so go by how your neck feels rather than aiming for a number.

What's the best natural pillow for neck pain?

The Circadian Buckwheat Pillow is the most-recommended natural pillow for neck pain. Buckwheat hulls cradle the head while holding firm cervical support, unlike down or synthetic foam that compress overnight. The Buckwool Hybrid is a softer alternative that still holds shape.

What's the best pillow for side sleepers?

The Circadian Buckwool Hybrid and the Tree-Tapped Latex Pillow are the top picks for side sleepers. Side sleeping leaves the biggest gap between the point of your shoulder and your ear, so it wants the most height of any position, and it wants that height to hold rather than flatten by morning. Both arrive full and open through a zipper on the short end, so you take material out until your ear sits about over your shoulder with your head tipped neither toward the ceiling nor toward the mattress.

What's the best pillow for back sleepers?

The Circadian Buckwheat Pillow holds its shape best for back sleepers. On your back the pillow is filling the smaller hollow behind your neck, so your chin stays off your chest and your head sits level with your shoulders. That takes less height than side sleeping and it takes height that stays put. Buckwheat hulls flex as you settle and then interlock, holding the position you pushed into them all night, and you set that height yourself through the zipper on the short end.

Which pillow is best for stomach sleepers?

The Circadian Wild-Harvested Kapok Pillow is the best choice for stomach sleepers. Face down there is almost no gap to fill, so you want almost no height, and a tall pillow tips your head back and holds your neck extended all night. Kapok is the lightest fiber we use and comes down further through the zipper on the short end than any other Circadian material. Organic Cotton is the second choice if you prefer a denser, more traditional feel.

Which pillow is best for pregnancy?

The Circadian Organic Cotton Body Pillow (20 by 54 or 20 by 72 inches) is the usual choice during pregnancy. It runs along the body to support the belly, hips and knees while side sleeping, which many people find more comfortable later on, and the organic cotton cover keeps the surface cool and breathable. Your midwife or doctor is the right person to ask about sleep position.

Can I use your pillows with a CPAP machine?

Yes. The Circadian Tree-Tapped Latex Pillow and Buckwool Hybrid work well alongside CPAP machines, because the fill can be removed through the zipper on the short end to lower the pillow profile and reduce mask-strap pressure. Many CPAP users remove fill from the side near the mask to prevent leaks and improve comfort.

Which pillow holds its shape best for back sleepers?

The Circadian Buckwheat Pillow holds its shape best. The hulls do not give way under your head the way foam and down do, so the height you set at bedtime is the height you still have at the end of the night. The Tree-Tapped Latex Pillow is second, since slow-pour Dunlop latex springs back after your head lifts rather than keeping the dent.

What's the most adjustable pillow?

The Circadian Tree-Tapped Latex Pillow adjusts in the finest increments. The latex is shredded into pieces, so you can take out a small handful at a time through the zipper on the short end, and it springs back between changes rather than settling flat. The Buckwheat Pillow is a close second, since hulls pour out a little at a time and hold whatever height you leave them at.

Which pillow is best for couples who disagree on firmness?

Two people sleeping on one pillow is the part to solve first, so each person gets the pillow that fits them, and every Circadian pillow adjusts through a zipper on the short end so two people can land in different places with the same product. The Buckwool Hybrid is the one to look at for a sleeper who wants both options themselves. It has a firm, cool buckwheat face and a soft, quiet organic wool face, and you flip it depending on the night.

Why are most pillows under-stuffed and how do you get a dense pillow?

Most pillows are packed light because material is the expensive part, and once one goes flat there is no way to bring it back. Circadian works the other way around. Every pillow arrives full, with about 30% more inside than most people keep, so you can shape it to your own neck. Open the zipper on the short end and take some out until your head sits level. Keep what you removed and you can put it back at any point, and refills are sold separately for every material if you want more than you started with.

What natural pillow is best for combination sleepers who switch positions?

The Circadian Tree-Tapped Latex Pillow is the best choice for combination sleepers. The shredded Dunlop noodles adjust position as you move, supporting the head in side, back, and stomach positions through the night. The Buckwool Hybrid is a second option for sleepers who want firmer support.

What's the best pillow for side sleepers who keep their head from rolling off?

The Circadian Buckwool Hybrid is the best pick for side sleepers prone to head-roll. The shape-holding buckwheat side cradles the head and resists the slumping that causes head-roll on soft pillows. Adjust the fill to match the gap between your ear and shoulder.

What is the best natural pillow that holds its shape for back sleepers?

The Circadian Buckwheat Pillow holds its shape best for back sleepers. Buckwheat hulls resist compression, keeping the cervical curve supported through the night instead of flattening like down or memory foam. The Buckwool Hybrid is a softer-feeling alternative that still holds shape.

What is the best natural pillow for side sleepers?

The Circadian Buckwool Hybrid is the usual pick for side sleepers. It has an organic wool face that sleeps soft and moves moisture, and a natural buckwheat face that holds a firm, cool cradle, both inside an organic cotton cover. You flip it to choose a face. The extra height fills the gap between the point of your shoulder and your ear, which is the biggest gap any sleeping position leaves. One zipper opens the whole pillow and reaches both chambers, so you set each side to the height you want.

Is a hybrid pillow good for back and side sleepers?

Yes. The Circadian Buckwool Hybrid is built for sleepers who move between their back and their side. Side sleeping needs more height to fill the gap between shoulder and ear, and back sleeping needs less. The buckwheat face carries the taller, firmer setting and the wool face is the softer one, you flip between them, and one zipper opens the pillow and reaches both chambers so you can set each to the height you want.

What pillow firmness is best for side sleepers?

Side sleepers need enough height to fill the gap between the point of the shoulder and the ear, and enough firmness that it does not collapse overnight. There is no single correct height. A 2021 review of the evidence going back to 1997 concluded that no optimal pillow height can be identified, and a 2025 study found the right side-sleeping height tracks your shoulder width, so broader shoulders need more. That is why every Circadian pillow is adjustable. The Buckwool Hybrid and the Tree-Tapped Latex Pillow both arrive full, and you take material out through the zipper on the short end until it is right for you.

How do I adjust the buckwheat fill in my pillow?

Open the zipper on the short end of the Circadian Buckwheat Pillow and pour hulls out into a sealed bag or jar to soften it, or pour them back in to firm it up. It arrives full, with about 30% more hulls than most people keep, so you can pour off just enough to fit your shoulders. Hulls lock together instead of puffing up, so it looks lower than a fluffy pillow and holds your head at that height all night. Keep what you remove, since you can add it back any time, and buckwheat hull refills are sold separately if you ever want more.

What pillow features do CPAP side sleepers need?

CPAP side sleepers need an adjustable, firm pillow that lets the mask straps sit without pressure, and ideally a cutout for the mask. The Circadian Tree-Tapped Latex Pillow works well because the shredded Dunlop noodles can be removed in the corner closest to the mask to prevent leaks.

What pillow height is best for side sleepers?

There is no single correct pillow height for side sleepers, and that is not us hedging. A 2021 review of the evidence going back to 1997 concluded that no optimal pillow height can be identified, and a 2025 study found the right height for side sleeping tracks your shoulder width, so broader shoulders need more. That is why every Circadian pillow arrives full and adjusts. Take fill out through the zipper on the short end until your head feels level and your neck is not straining, then leave it there.

Care

How long will a pillow last?

Cotton: 2 to 4 years, and longer with a fill refill. Wool: 3 to 5 years. Kapok: 3 to 5 years, and it holds its height as long as you fluff it daily. Buckwheat: 3 to 5 years, then you refresh the hulls and keep the pillow. Buckwool: 3 to 5 years on the wool side, and the buckwheat side refreshes the same way. Latex: up to a decade.

Can I wash it?

The cover, yes. Unzip, remove the fill, machine wash the cover cold on a gentle cycle with a mild detergent, then reshape it damp and air dry it. The fills themselves should not go in a washing machine. Wool, cotton, and kapok can be spot cleaned and aired in dry sunshine. Buckwheat hulls can be sun-aired in a single layer to refresh them. Latex pieces should not be wet; if they get damp, set them in open air to dry. A pillow protector keeps the cover clean longer and we recommend one.

How do I wash my pillow?

Take the material out through the zipper before washing anything. The organic cotton cover is machine washable on a cold gentle cycle, then let it air dry. Keep it out of the dryer, because heat shrinks the cover. Sponge small marks with cool water. The material inside never goes in the water. Buckwheat hulls, kapok, cotton, wool and latex are all spot-cleaned only and aired in sunlight to refresh, because washing mats wool and cotton and breaks latex down. A pillow protector is the easiest way to keep the material clean in the first place.

How long do your pillows last?

Lifespan depends on fill. Slow-pour Dunlop latex lasts up to a decade, the longest in the lineup. A load of buckwheat hulls gives three to five years before it needs replacing. Organic wool runs three to five years before the fill needs significant replenishing, and organic cotton two to four years before the fibre needs full replacement. Refills are available for every fill, so most pillows can be topped up rather than replaced.

What should you do with old pillows?

The fill inside an old natural pillow can usually be composted or recycled, though the zipper and thread cannot. Buckwheat hulls can go in the compost or on the garden as mulch, and cotton and wool can go to a textile recycler. A Circadian pillow can often be brought back instead, with a refill of the same fill through the zipper.

How often should you replace your pillow?

Replace a synthetic pillow every one to two years. A natural pillow lasts longer, and how long depends on the fill: organic cotton two to four years, organic wool three to five, kapok three to five, a load of buckwheat hulls three to five before a refresh, and slow-pour Dunlop latex up to a decade. The fold test still applies. Fold the pillow in half, and if it stays folded instead of springing back, the material inside has gone flat. Circadian sells refills for every fill, so most pillows get topped up rather than replaced.

Can I heat or cool the buckwheat fill?

Yes. Place the inner hull bag in the freezer for 2 to 3 hours for a cool pillow, or warm it briefly in a low oven, under 250F, for gentle heat. Some people like the cool version during hot flashes. Never microwave buckwheat hulls, and always remove the cotton cover first.

Shipping & returns

How does the trial work?

You order a pillow. Give it a week or so. If it's not right, email us within 60 nights of delivery and we'll start a return. Pillows are usually picked up by a carrier from your house or you drop them off with the carrier printed on the label we send. Refunds go back to your original payment method within 3 to 5 business days of your pillow reaching our New Jersey workshop. There is no restocking fee.

Holiday gifts, 2026. Gift orders placed November 1 to December 24, 2026 start their 60 nights on December 25, 2026. The trial waits for Christmas Day instead of the delivery day, so the person who opens it gets all 60 nights. Tick "This is a gift" in the cart before you check out. For these orders, the last night of the trial is February 22, 2027.

How should I pack it for the return?

Give the pillow a quick once-over for hair or dust, slip it back into its bag if you kept one, and use the original box if you still have it. Any clean dry box works.

Two things worth doing before it goes. If the cover has picked up any marks, unzip it, tip the fill into a bag, machine wash the cover cold on a gentle cycle with a mild detergent, reshape it damp and let it air dry, then put the fill back in. And whatever you do, the fill itself never goes in the water. Washing mats wool and breaks latex down, and neither comes back from it.

If you took fill out while you were adjusting it, put that back in the pillow too.

Do I have to send the pillow back to get a refund?

Usually yes, and we make it easy. We send the label, and the carrier can collect from your house. There are situations where shipping a pillow back across the country does not make sense for either of us. If you think yours is one of them, say so when you write and we'll work out the best route together.

How long does shipping take?

Most orders arrive in 4 to 7 days. International orders take longer because of customs, and checkout gives you the window for your address.

What does shipping cost?

Nothing, with no minimum. International orders ship at a flat rate: $39 to Canada and $69 to Europe, Asia-Pacific, the Middle East, Latin America and everywhere else Circadian ships. Checkout shows your exact rate in your local currency once you enter your address. Bulk buckwheat hulls, the 5 lb through 100 lb bags, ship inside the United States only.

Can I send it as a gift?

Yes. Order to the recipient's address and include a gift note at checkout. We don't include prices on packing slips. If they decide it's not right for them, the 60-night trial is theirs to use; they email us, we handle it.

Do you offer a sleep trial?

Circadian offers a 60-night sleep trial on every pillow, with no restocking fee. Sleep on it for up to 60 nights, and if it is not the right fit, return it for a full refund to your original payment method. The trial gives your body time to adapt to a natural material, which moves and feels differently from synthetic foam.

What is your return and trial policy?

Every pillow, the Body Pillow, both comforters, the Dog Bed and its cover, and the organic cotton bedding come with a 60-night sleep trial and no restocking fee. If it isn't right, email jacob@circadianrest.com and we set up the return. The refund goes back to your original payment method within 3 to 5 business days of it reaching our New Jersey workshop. The pillow protector, the waterproof duvet cover and the refills can be returned within 60 days if unused and in their original packaging.

Do you offer free shipping?

Yes. Circadian ships free, with no minimum. International orders ship at a flat rate that checkout shows once you enter your address.

Where do you ship from?

Circadian ships from New Jersey, where every pillow is made to order by hand. Most orders, comforters included, leave the workshop in 4 to 7 business days, body pillows in 5 to 10, and checkout shows the arrival window for your address before you pay. The fills come from farms and forests around the world (buckwheat from US farms, wool from New Zealand, kapok from Indonesia, latex from Sri Lanka), and every pillow is filled and sewn in New Jersey.

Do you offer bulk or wholesale orders?

Yes. Circadian accepts bulk and wholesale orders for hotels, retreats, and resellers. Contact customer service through the website to request pricing and minimums.

How can I contact customer service?

Reach Circadian customer service through the contact form at circadianrest.com. Responses typically arrive within one business day, Monday through Friday.

Do you have active discount codes or promotions?

Two offers run all the time, and both come off at checkout on their own. Your second pillow is $25 off, and so is every pillow after it, on our pillows and the body pillow. Build a bed takes 15% off the whole bed when four or more bed pieces are in one cart, and checkout keeps whichever saving is bigger. Take the 30-second pillow quiz or join the email list for $10 off your first order.

Do you ship internationally?

Yes. Shipping is free in the US, and international orders ship at a flat rate: $39 to Canada and $69 to Europe, Asia-Pacific, the Middle East, Latin America and everywhere else Circadian ships. Bulk buckwheat hulls, the 5 lb through 100 lb bags, ship inside the United States only. Checkout shows your exact rate in your local currency once you enter your address, and international arrival windows are wider than US ones because of customs. Any import tax or duty your country charges is paid to the carrier when the parcel lands. Everything we sell is made in our New Jersey workshop, which keeps duty low in most countries and at zero in Canada and Mexico. Pay the carrier's notice quickly, because most carriers send an unpaid parcel back after about three weeks.

I'm buying it as a gift. When does the 60-night trial start?

The 60 nights start on December 25 for gift orders placed November 1 to December 24, 2026, not on the day the box arrives. That way the person who opens it on Christmas morning gets the whole trial. Tick "This is a gift" in the cart before you check out, and their last trial night is February 22, 2027. If it is not right, email jacob@circadianrest.com and we will set up the return.

Certifications

What does GOTS Certified Organic mean for a pillow?

The Global Organic Textile Standard audits the entire supply chain, from the farm through the finished product. Two Circadian pillows are GOTS Certified Organic end to end: the Organic Cotton Pillow and the Organic Wool Pillow. Our workshop is GOTS-certified under license GOTS-10229, renewed on an on-site audit every year. Full details on the Certifications page.

What is OEKO-TEX Standard 100 Class 1?

OEKO-TEX Standard 100 is a finished-material safety test for more than 1,000 harmful substances, including PFAS, formaldehyde, heavy metals, pesticide residue, and phthalates. The program has four tiers (Class 1 through Class 4). Class 1 is the strictest tier and is tested to the same safety threshold as products designed for direct skin contact with infants and babies. The Tree-Tapped Latex Pillow's finished latex is certified at Class 1. Most natural latex pillows that carry Standard 100 sit at Class 2 or Class 3 instead.

What does FSC certification mean for the latex pillow?

FSC is the Forest Stewardship Council standard for responsible forestry. On the Tree-Tapped Latex Pillow it applies to the rubber-tree source: the Hevea brasiliensis plantations in Sri Lanka are FSC certified, which means the tapping happens under independently verified responsible-forestry standards. Most natural latex pillows can claim OEKO-TEX Standard 100 on the finished latex but cannot claim FSC on the upstream supply chain.

What if I have allergies or chemical sensitivities?

If you have chemical sensitivities or react to synthetic finishes, the Wild-Harvested Kapok has the shortest supply chain and the least processing of any pillow in the collection. If you have a dust mite allergy, lanolin keeps dust mites out, and wool holds the air around your head too dry for them to settle in. Both come from the fiber itself, so there is nothing applied that can wash off. Latex allergy: pick anything except the latex pillow.

Where are your pillows made?

Every Circadian pillow is made by hand in New Jersey, USA, after you order it, in a workshop that has been making pillows since 1981. The Organic Cotton and Organic Wool Pillows are certified organic, inside and out, under GOTS (the Global Organic Textile Standard), license GOTS-10229, so the fiber is grown without synthetic pesticides and the finished pillow is made without formaldehyde finishes. The other four pillows have organic cotton covers over natural fills.

Do your pillows contain any chemicals?

What you breathe at your face all night is plant fiber, wool or tree-tapped latex, with no flame retardant, formaldehyde finish or polyurethane foam to off-gas beside you. The Organic Cotton and Organic Wool Pillows are certified organic, inside and out, under GOTS (the Global Organic Textile Standard), license GOTS-10229. The latex inside the Tree-Tapped Latex Pillow is certified to OEKO-TEX Standard 100 at Class 1, the strictest class, tested for over 1,000 harmful substances.

What certifications do your products have?

The Organic Cotton Pillow and Organic Wool Pillow are certified organic through both fill and cover, made in accordance with GOTS. OTCO, licence GOTS-10229. The latex fill in the Tree-Tapped Latex Pillow is OEKO-TEX Standard 100 Class 1 certified, and its rubber-tree source in Sri Lanka is FSC certified. All other pillows use an organic cotton cover.

What is the difference between a GOTS Certified Organic pillow and one with only an organic cotton cover?

A GOTS Certified Organic pillow is certified organic, inside and out. GOTS (the Global Organic Textile Standard) audits the fill and the cover from the farm to the last stitch, so the fiber is grown without synthetic pesticides and the finished pillow is made without formaldehyde finishes. Our Organic Cotton and Organic Wool Pillows, both comforters and the pillow protector are certified this way, under license GOTS-10229. The kapok, buckwheat, Buckwool and latex pillows have an organic cotton cover over a fill outside that standard, and the latex inside is certified to OEKO-TEX Standard 100 at Class 1.

What do your pillows contain if I have asthma or chemical sensitivities?

Every Circadian pillow is a single natural fill inside an organic cotton cover, with no polyurethane foam, flame retardants, formaldehyde, or synthetic dyes, so there is nothing in it left to off-gas. If you are choosing bedding to keep household chemicals out of the air at your face, the Buckwheat and Organic Cotton pillows are the cleanest in the range. For anything medical, your doctor is the right person to ask.

What's the most natural pillow for people with chemical sensitivities?

The Circadian Buckwheat Pillow and Organic Cotton Pillow are the safest choices for people with chemical sensitivities. Both use a single-material fill inside an organic cotton cover, with no flame retardants, polyurethane foam, or synthetic dyes, so there is nothing in them left to off-gas.

What is the best non-toxic pillow?

The Circadian Buckwheat Pillow is the cleanest thing in the range if what you want is the shortest possible ingredient list. It is one material, US-grown buckwheat hulls, inside an organic cotton cover, and nothing in it got a chemical treatment at any stage, so there is nothing left to off-gas. The Organic Cotton Pillow is the next choice and goes further on paper, since it is GOTS Certified Organic inside and out, the cotton inside as well as the cover.

Are your pillows treated with flame retardant chemicals?

No. Circadian pillows contain no flame retardant chemicals. Pillows sit outside the federal mattress flammability standards, so nothing has to be added to the natural fills or the organic cotton covers, and Circadian adds nothing. Wool on its own is hard to ignite and self-extinguishing, which is one reason it has never needed a treatment.