Circadian vs Hullo

Circadian vs Hullo: which buckwheat pillow is better?

For most buyers, the Circadian Buckwheat Pillow: USA-grown hulls pre-polished for up to 68% less crunch than standard hulls, four sizes, and 60 nights to decide with a prepaid return label.

The Hullo Buckwheat Pillow is American-grown hulls, never roasted, in a 7 oz cotton twill cover Hullo calls 100% certified organic, assembled in Duluth, Minnesota, with a 60-night trial in which the buyer pays the return shipping. The Circadian Buckwheat Pillow is USA-grown hulls, pre-polished and air-jet cleaned by a patented process, then UV sterilized, in an organic cotton cover, handmade to order in New Jersey. A Standard is $149 at Circadian and $129 at Hullo, as of October 2026. Hull refill bags start at 1 lb by weight, and you get 60 nights to sleep on the pillow before you decide. The rows below are Hullo's published facts.

How we checked. Every Hullo fact on this page was read from Hullo's own pages on October 29, 2026, and each one links to its page in Sources below. Circadian prices are read live from our Shopify store. We re-check the Hullo rows every quarter. How we compare brands

Circadian Buckwheat Pillow product shot, wide bedroom sceneSix fills, one zipper
Handmade in New Jersey
9 of 9 graded rows green on the Circadian side, across every table below. Their side is graded by the same rule.
60-night sleep trialFull refund, even slept onMade by hand to order in New JerseyFree shippingRefills for every fill

Why ours, in five lines

  1. Sleep on it for 60 nights. Send it back inside 60 nights, even slept on, and you get a full refund once it reaches us, with a prepaid return label and no restocking fee. Hullo's trial page says: "Shipping charges for returned products are the responsibility of the purchaser and are not covered by our free shipping policy."
  2. Ours are made to order by hand in our New Jersey workshop. Hullo says its pillows are cut, sewn and assembled in the USA, and every Hullo is assembled in and shipped from Duluth, Minnesota.
  3. Hulls pre-polished and air-jet cleaned by a patented process: up to 68% less crunch than standard hulls, because ours are pre-polished. A one-star Hullo review titled It's Noisy describes "loud crunchy sounds" with every turn of the head.
  4. Four sizes: Travel 12 by 16 inches, Standard 20 by 26 inches, Queen 20 by 30 inches and King 20 by 36 inches. Hullo makes Small 14 by 20 inches, Standard and King, and no Queen.
  5. Hulls are sold as refill bags starting at 1 lb. When the hulls settle after a few years, a refill tops your pillow back up to full height. Hullo's smallest refill is a 5 lb bag, per their page.
  6. No height can be calculated for you. A 2021 review in Healthcare looked for the right pillow height and found no optimum for back or side sleeping, and no link between the height that works and the measurements of a sleeper's head or neck. Every pillow we make opens at the zipper, and we sell a refill for every fill.

What Hullo does well

Hullo's Standard is $129, and each Standard after the first is $89 when you buy two or more, per their page. Their pillows ship free from Duluth, Minnesota, usually arriving in 1 to 4 business days, and their buckwheat pillow carried 455 reviews averaging 4.5 when we read it.

Their hulls are American-grown, from Montana and North Dakota, and never roasted, in their words. Their refill bags cost less by weight: $29 for 5 lb, against our $59 for 5 lb (as of October 2026). Hullo has sold buckwheat pillows since 2012, per their site.

Hullo makes a 14 by 20 inch Small size and a buckwheat bolster. We don't make either.

By the numbers

Circadian and Hullo, counted.

Three figures that decide most pillow purchases, side by side. Every number on the Hullo side is from their own site, read October 29, 2026, and the note under each bar says where.

Nights to decide

Circadian 60 nights
Hullo 60 nights

Hullo: The buyer pays return shipping, per their trial page.

Fills made, of the six on this page

Circadian 6
Hullo 1

Hullo: Buckwheat.

Fills with a refill sold

Circadian 6
Hullo 1

Hullo: Buckwheat only, in 5, 10 and 20 lb bags.

Nights to decide: Circadian 60 nights, Hullo 60 nights; how many of the six fills each brand makes: Circadian 6, Hullo 1; fills with a refill sold: Circadian 6, Hullo 1.

One table, buckwheat against buckwheat.

Hullo makes one buckwheat bed pillow, in Small, Standard and King, so it is the one in the table. Their wording sits in every cell on their side, and the source is under the table. If you are choosing hulls, the Buckwool Hybrid in the list below is the same hulls with a wool side to turn to.

Buckwheat, row by row.

Both are USA-grown hull pillows in an organic cotton twill cover, with a zipper and a 60-night trial. The rows that separate them are what was done to the hulls, the sizes, the weight, and who pays to send the pillow back.

Circadian Buckwheat Pillow compared with the Hullo Buckwheat Pillow on price, sizes, fill, weight, cover, certification, adjustability, refills, trial, returns, where each is made and how long it lasts.
What matters Circadian Buckwheat PillowStandard 20 by 26 inches Hullo Buckwheat PillowStandard 20 by 26 inches, read October 29, 2026
Price $149 Standard 20 by 26 inches, as of October 2026.Travel 12 by 16 inches $89, Queen 20 by 30 inches $169, King 20 by 36 inches $199, as of October 2026. $129 at Standard, 20 by 26 inches, no sale price shownSmall $79, King $199. Each extra Standard is $89 when you buy two or more; each extra Small is $20 off and each extra King $60 off, per their page.
Sizes Four sizes: Travel 12 by 16 inches, Standard 20 by 26 inches, Queen 20 by 30 inches, King 20 by 36 inchesOne pillow for every bed, each priced in the row above. Three sizes: Small 14 by 20 inches, Standard 20 by 26 inches and King 20 by 36 inchesNo Queen is made.
Fill USA-grown buckwheat hulls, pre-polished and air-jet cleaned by a patented process, then UV sterilized with no chemicals.Up to 68% less crunch than standard hulls, since ours are pre-polished. American-grown buckwheat hulls, "never roasted dry & crumbly," grown in Montana and North Dakota and milled and air-cleaned in North Dakota, in their words
Weight About 10 lb at Standard, fill and coverTravel 2.5 lb, Queen 13 lb, King 15 lb, from the maker's table. It arrives full, so it gets lighter as you take hulls out. 9 lb 12 oz at Standard, per their size tableSmall 4 lb 4 oz, King 13 lb 12 oz. Their FAQ calls the King around 15 pounds.
Cover Organic cotton twill, undyed. Machine-washable, preshrunk 7 oz twill that they call "100% Certified Organic Cotton"No certifier or certificate number named on the pages we read.
Certification Organic cotton cover, and hulls we describe as they areThe hulls are USA-grown and we do not call them organic, or borrow a certificate for them. Organic claimed for the cover, with no certifier or number publishedTheir refill page says the currently shipping hull crop is not certified. Their FAQ says neither the cover nor the hulls are treated with flame retardants.
Adjustable Zipper on the short endIt arrives full, with more hulls than most people keep, so you can shape it to your own neck. Take some out until the height fits how you sleep, and put it back whenever you change your mind. Yes, a concealed 12 inch zipper; it ships fully stuffed and you scoop hulls out with a cup
Refills sold Hull refill bags, from 1 lb up1 lb $39, 5 lb $59, up to 200 lb, as of October 2026. When the hulls settle after a few years, you top the pillow back up to full height instead of throwing it away. Yes, 5, 10 and 20 lb bags at $29, $49 and $89"Grown & milled in the U.S.A.," in their words.
Sleep trial 60 nights, slept onSleep on the pillow, adjust its height, and send it back inside 60 nights if it does not suit you. 60 nights"Use Hullo for up to 60 nights," in their words, then email them to start a return.
Returns Full refund inside 60 nights, even slept onThe refund is issued once the pillow reaches us. The return label is prepaid and there is no restocking fee. Refund of the purchase, no questions asked; the buyer pays return shippingTheir trial page: "Shipping charges for returned products are the responsibility of the purchaser." It asks buyers to first consider passing the pillow on, as returned pillows cannot be resold.
Where it is made Handmade in New Jersey.Our pillows are handmade in a New Jersey workshop that has been making pillows since 1981. Cut, sewn and assembled in the USA, and assembled in and shipped from Duluth, Minnesota, in their words
How long it lasts 3 to 5 years per load of hulls, then refresh the hulls and keep the pillow.A figure we publish and hold to, with a refill behind it. "can last many years," with no number given, in their wordsNo warranty is published. Their FAQ says refill hulls extend the life of the pillow.
Says what it is in full, and it checks out Claimed without a number or scope Not offered or not published
What Hullo publishes, in their own words

Materials, their words: Premium Buckwheat Hulls - American-grown, never roasted dry & crumbly. 100% Certified Organic Cotton - Machine-washable, preshrunk 7 oz. twill. Cut, Sewn & Assembled in the U.S.A.

Certification, their words: We prefer certified organic buckwheat hulls when they're available, but when a non-certified crop is of superior quality, we'll select that one. The currently shipping crop is not certified, but guaranteed to be of superior quality to anything currently available in the U.S.A.

Trial and returns, their words: Use Hullo for up to 60 nights and experience the difference it makes. Note: Shipping charges for returned products are the responsibility of the purchaser and are not covered by our free shipping policy.

What they say it is best at, their words: Firm, adjustable support that stays cool. America's Favorite Buckwheat Pillow.

Sources for this table:Hullo Buckwheat Pillow product page (read Oct 29, 2026) · Hullo buckwheat hulls refill page (read Oct 29, 2026) · Hullo FAQ (read Oct 29, 2026) · Hullo 60-night trial page (read Oct 29, 2026) · Hullo buckwheat pillow reviews (read Oct 29, 2026)

Hullo Buckwheat Pillow product page, Standard 20 x 26 inch selected at $129, Small $79, King $199, 2-pack $218, Buy 2+ $40 off each badge, 4.5 stars from 455 reviews. Proves the price and rating rows. Read October 29, 2026.
Hullo Buckwheat Pillow, Standard 20 by 26 inches: $129, Small $79, King $199, 4.5 stars from 455 reviews. Read October 29, 2026. hullopillow.com
Hullo Buckwheat Pillow spec list and FAQ: Standard 9 lbs 12 oz, 100% certified organic cotton 7 oz twill cover, American-grown never roasted hulls, Dunlap concealed zipper, hulls grown in Montana and North Dakota, milled in North Dakota, assembled in Duluth, Minnesota. Proves the fill, cover and where-made rows. Read October 29, 2026.
Their spec list and FAQ: 9 lb 12 oz at Standard, a 7 oz organic cotton twill cover, hulls from Montana and North Dakota, assembled in Duluth. Read October 29, 2026. hullopillow.com
Hullo 60-Night Trial page: returned pillows cannot be resold, and shipping charges for returned products are the responsibility of the purchaser. Proves the trial and return shipping row. Read October 29, 2026.
Their trial page: return shipping is the purchaser's, and returned pillows cannot be resold. Read October 29, 2026. hullopillow.com

Travel $89 · Standard $149 · Queen $169 · King $199, as of October 2026. 60 nights to decide.

See the Buckwheat Pillow in your size ›

Up close

Pre-polished hulls, up close.

Ours are USA-grown hulls, pre-polished and air-jet cleaned by a patented process, then UV sterilized with no chemicals. Pre-polishing is why they give up to 68% less crunch than standard hulls. They flex under your head, then lock and hold your neck where you set it.

  • About 10 lba Standard of USA-grown hulls, with its cover
  • Up to 68%less crunch than standard hulls, as ours are pre-polished
Extreme macro photograph of pre-polished USA-grown buckwheat hulls, small dark walnut-brown hulls, lit by warm raking sunlight. Move over the fill to see it up close

What you're not sleeping on

Which pillow for which sleeper

Nine ways people sleep, and the pillow for each.

Our column names the Circadian fill and the mechanism. The Hullo column shows which Hullo pillow uses the same fill as ours. It does not rate how well that pillow suits the sleeper.

Which Circadian pillow suits nine kinds of sleeper, and the Hullo pillow on this page built on the same fill.
SleeperCircadianHullo
Side sleeper Buckwheat Pillow, with the Buckwool Hybrid beside itHulls lock at the height a shoulder needs and stay there. Hullo Buckwheat Pillow
Back sleeper Organic Wool PillowSpringy height that bounces back instead of going flat. Not among the pillows compared here
Stomach sleeper Wild-Harvested Kapok PillowSoft and light like down, and you set the height by taking fill out. Not among the pillows compared here
Sleeps hot Buckwheat Pillow, then the Organic Wool PillowAir moves between the hulls, so buckwheat is the coolest pillow we make. Wool keeps you cool because the heat leaves with the damp: it holds up to 30% of its weight in moisture and still feels dry. Hullo Buckwheat Pillow
Neck pain Buckwheat Pillow, with the Buckwool Hybrid beside itHulls flex under your head and then lock, holding your neck where you set it. Hullo Buckwheat Pillow
Replacing down Wild-Harvested Kapok PillowSoft and light like down, without feathers or polyester. Not among the pillows compared here
Leaving memory foam Tree-Tapped Latex PillowPushes back instead of sinking, and the height is yours to set. Not among the pillows compared here
Wants nothing from an animal Kapok, Organic Cotton or Tree-Tapped LatexNone of these three has wool or any other animal fiber in it. Not among the pillows compared here
Dust mite allergies Organic Wool PillowNaturally hypoallergenic, and the air at the face stays too dry for dust mites, which cause most dust allergy. Not among the pillows compared here

What buyers say, from each brand's own page.

Ours come from Judge.me and update on their own. Hullo's number comes from the review page on their own site, read on the day we captured it.

Circadian, read live from Judge.me

Buckwheat Pillowfrom 49 reviews4.82of 5

Judge.me collects these after delivery, and the numbers on this card update whenever a review lands, so they are never copied in by hand.

Hullo, from their own product pages

Hullo Buckwheat Pillowfrom 455 reviews4.5of 5

Of their 455 reviews, 364 are five stars, 34 four stars, 19 three stars, 15 two stars and 23 one star, and 87% would recommend Hullo, per the review page on their site, read on October 29, 2026.

If you came here for an alternative

The best Hullo pillow alternatives in 2026, sorted by what you wanted from it.

Start with buckwheat, then the hybrid, which is the same hulls with a wool side. The other four are fills Hullo does not make.

Circadian Buckwheat Pillow product shot, wide bedroom scene
Cleaned with air and light

Buckwheat Pillow

USA-grown hulls, pre-polished, air-jet cleaned by a patented process and UV sterilized, so they are cleaned with air and light, no chemical wash, inside an organic cotton twill cover. The heaviest fill we make, and the one that holds your neck where you set it.

Best for neck pain and hot sleepers

Starting from:Travel: 12 by 16 inches, $89Standard: 20 by 26 inches, $149as of October 2026 See the pillow ›
Man with Circadian Buckwool Hybrid Pillow, wool and buckwheat hull dual fill clearly visible through zipper
Two fills, one pillow

Buckwool Hybrid Pillow

Two flat layers, USA-grown buckwheat hulls and organic wool, one above the other with a level cotton divider. Flip the pillow to choose the firm buckwheat side or the soft wool side.

Best for neck pain that changes night to night

Starting from:Travel: 12 by 16 inches, $99Standard: 20 by 26 inches, $199as of October 2026 See the pillow ›
Circadian Organic Cotton Pillow with cotton fill bursting from zipper, NYC bedroom view
Certified inside and out

Organic Cotton Pillow

Long-staple organic cotton grown in Texas, carded by hand, inside an organic cotton sateen cover, and the finished pillow is certified organic inside and out. A dense, familiar feel you don't have to get used to, and it's silent.

Best for a first natural pillow

Starting from:Travel: 12 by 16 inches, $89Standard: 20 by 26 inches, $179as of October 2026 See the pillow ›
Organic wool pillow on a made bed in a wide room scene, organic wool fill
For warm sleepers

Organic Wool Pillow

Organic wool from New Zealand farms, scoured with the sheep's own lanolin oils left in, and certified organic inside and out. The finished pillow is GOTS Certified Organic (Global Organic Textile Standard), with the same GOTS-10229 finished-product certification as our cotton pillow. You stay cool because the heat leaves with the damp: wool holds up to 30% of its weight in moisture and still feels dry.

Best for hot sleepers and night sweats, and dust-mite allergies

Starting from:Travel: 12 by 16 inches, $99Standard: 20 by 26 inches, $209as of October 2026 See the pillow ›
Our Wild-Harvested Kapok Pillow on a green linen bed. Soft, fluffy kapok spills from the open zipper.
The lightest natural fiber

Wild-Harvested Kapok Pillow

Wild-harvested kapok from Ceiba pentandra seed pods in Java, Indonesia, never bleached or chemically treated, inside an organic cotton cover. The pods ripen, split open and drop, and the kapok is gathered from the ground, so the tree is never cut down. Soft and light like down, without feathers or polyester.

Best for chemical sensitivities, and former down users who want a vegan pillow

Starting from:Travel: 12 by 16 inches, $79Standard: 20 by 26 inches, $119as of October 2026 See the pillow ›
Tree-tapped latex pillow with slow-pour Dunlop latex fill on a pink boucle bed
Springs back

Tree-Tapped Latex Pillow

Shredded slow-pour Dunlop latex, 100% Hevea sap tapped from living rubber trees in Sri Lanka, from an FSC certified rubber-tree source, inside an organic cotton cover. It pushes back instead of sinking, so the height you lie down on is the height you wake up on.

Best for people leaving memory foam

Starting from:Travel: 12 by 16 inches, $89Standard: 20 by 26 inches, $169as of October 2026 See the pillow ›

What people ask before they choose.

Is Hullo better than Circadian?

For most buyers, Circadian's Buckwheat Pillow is the better pick, with USA-grown hulls pre-polished for up to 68% less crunch than standard hulls, four sizes, and 60 nights to decide with a prepaid return label. Hullo's Standard costs less, $129 against our $149 as of October 2026, and Hullo makes a 14 by 20 inch Small size, which we don't. If the lower price or that size is what decides it for you, that is where Hullo differs from us. Both come with 60 nights to decide; Hullo's buyer pays the return shipping, per their trial page, and ours comes with a prepaid return label. Our Buckwheat Pillow is about 10 lb at Standard, filled with USA-grown hulls that are pre-polished for up to 68% less crunch than standard hulls, so they flex under your head, then lock and hold your neck in line all night. It comes in Travel, Standard, Queen and King. If you want a softer, quieter side, the Buckwool Hybrid layers organic wool over the hulls so you can flip it.

Who pays for the return on a Hullo pillow?

The buyer does. Hullo's trial page says shipping charges for returned products are the responsibility of the purchaser and are not covered by their free shipping, and it asks buyers to first consider passing the pillow on to a friend, relative or pet, because returned pillows cannot be resold. Inside its 60-night trial Hullo refunds the purchase, no questions asked, in their words. Our Buckwheat Pillow also comes with a 60-night sleep trial. Return it inside those 60 nights, even slept on, and you get a full refund once it reaches us. The return label comes prepaid, and there is no restocking fee.

Is the Hullo pillow noisy?

Hullo's FAQ says its pillow "makes a gentle rustling noise when moved" and that most people adjust to the sound after a few nights. A one-star review titled It's Noisy describes "loud crunchy sounds" with every turn of the head. Our hulls are pre-polished for up to 68% less crunch than standard hulls. If you want quieter still, the Buckwool Hybrid adds a layer of organic wool you can flip to face up. Before buying any hull pillow, ask the brand whether its hulls were polished or cleaned, and look for the answer on its page.

Is the Hullo pillow heavy?

Hullo's size table gives 9 lb 12 oz for a Standard and 13 lb 12 oz for a King, and its FAQ calls the King around 15 lb. A five-star review calls their Standard "extremely heavy and kind of unwieldy." Ours is no lighter: about 10 lb at Standard and 15 lb at King, fill and cover. Both arrive full, and with either you take hulls out through the zipper until the height fits your shoulders, which also takes weight off.

Are Hullo's buckwheat hulls organic?

Not the ones shipping now. Hullo's refill page says the currently shipping crop is not certified, and its FAQ says they prefer certified organic hulls when available. Hullo calls its cover 100% certified organic cotton but names no certifier or certificate number on the pages we read. We do not call our hulls organic, because like most buckwheat hulls they carry no organic certification. Ours are USA-grown, pre-polished and air-jet cleaned by a patented process, then UV sterilized with no chemicals, inside an organic cotton twill cover.

Does a buckwheat pillow make your neck sore at first?

It can while the height is wrong. A five-star Hullo review describes a stiff neck in the first week, until the reviewer took out 6.5 cups of hulls. Hulls flex under your head, then lock and hold your neck in line all night, so the first job is to take hulls out until the height fits how you sleep. Ours arrives full, with more hulls than most people keep, and the Buckwool Hybrid gives you a soft organic wool side for the nights you want something softer.

How do I set the height on night one?

Open the zipper before your first night and take out more hulls than feels right: on your side, your head should rest level with the rest of your body, tipped neither up toward the ceiling nor down into the mattress. On your back you need much less height, just enough to fill the hollow behind your neck so your chin stays off your chest. Sleep three nights at a height before changing it again.

Does Hullo sell hull refills?

Yes, in 5, 10 and 20 lb bags at $29, $49 and $89, grown and milled in the USA, in their words. We sell the same hulls that fill our pillow in bags from 1 lb ($39) to 200 lb, with 5 lb at $59, as of October 2026. When a pillow settles after a few years, a refill bag tops it back up to full height.

Where is the Hullo pillow made?

Hullo says its pillows are cut, sewn and assembled in the USA, and that every Hullo is assembled in and shipped from Duluth, Minnesota, from hulls grown in Montana and North Dakota and milled in North Dakota. Every Circadian pillow is handmade to order in our New Jersey workshop, and the Buckwheat Pillow is filled with USA-grown hulls.

Which Circadian pillow is closest to the Hullo pillow?

The Circadian Buckwheat Pillow. Both are USA-grown hulls, shipped full with a zipper so you set your own height, with 60 nights to decide. Our Buckwheat Pillow weighs about 10 lb at Standard, and its hulls are pre-polished for up to 68% less crunch than standard hulls. If you want a soft, quiet side to turn to, the Buckwool Hybrid layers organic wool over the hulls.

Hullo or Circadian for neck pain?

For neck pain, the Circadian Buckwheat Pillow: the hulls flex under your head, then lock and hold your neck in line all night instead of sinking. Hullo makes a firm hull pillow too, and a 14 by 20 inch Small size, which matters if a smaller pillow is your priority rather than neck support itself. With our Buckwheat Pillow you take hulls out until the height fits how you sleep, with 60 nights to find it and a prepaid return label if it never fits. At Standard size, Circadian is $149 and Hullo is $129, as of October 2026. If your neck changes night to night, the Buckwool Hybrid gives you a firm hold on bad nights and a soft wool side on the others, in one pillow.

Further reading, on this site

Where the Hullo facts come from

Every rival fact on this page was read from the brand's own site on the date shown, and the cell repeats their wording. If Hullo changes a price or a policy, tell us and we will re-check the row. The rules every comparison follows are on how we compare brands.

Screenshots of the price, materials and return-shipping rows were taken on October 29, 2026.

Polished hulls, sewn in New Jersey, and 60 nights to decide.

If you want a buckwheat pillow, buy the one whose hulls were polished and sterilized, that is handmade in New Jersey after you order it, and that can come back inside 60 nights for a full refund, even slept on, with a prepaid return label. If the firmness worries you, the hybrid gives you a wool side to turn to.

Choose your Buckwheat Pillow size ›

King $199 · Queen $169 · Standard $149 · Travel $89, as of October 2026

Real people, real pillows

Chosen buckwheat? From $89 (Travel 12 by 16 inches), as of October 2026. 60 nights to decide.

Shop the Buckwheat Pillow ›