Buckwool Hybrid Pillow

Standard (20" x 26")

$179.00

Buckwool Hybrid Pillow

Two adjustable chambers in one pillow. Pre-polished USA-grown buckwheat hulls on one side for firm cervical support, long-staple New Zealand wool on the other for soft and breathable.

$179.00

Dual-Sided
Naturally Hypoallergenic
Long-Staple Organic Wool

Handmade in our New Jersey workshop since 1981.

From$179

Size Standard (20" x 26") Travel (12" x 16") Queen (20" x 30") King (20" x 36")

|8 reviews

You'll probably find a favorite side within the first week. Use it for 60 nights, flip between sides, figure out whether the versatility helps or whether you'd prefer a dedicated single-fill pillow. If it's not for you, send it back. Full refund.

Free shipping, free returns. Most orders arrive in 4 to 7 days. A hybrid pillow is a different concept than most people are used to, and you need time with it before you know if switching between two feels improves your sleep or complicates it.

One side uses GOTS certified organic wool for soft, temperature-regulating support. The other side uses USA-grown natural buckwheat hulls for firm, cool, moldable support. One pillow, two completely different sleeping experiences, kept separate by an internal fabric divider.

There's a single zipper that opens the entire pillow. Inside, a reinforced fabric divider separates the wool fill from the buckwheat hulls. You can reach into either chamber and adjust that side independently. Adding wool to the wool side doesn't change the buckwheat side, and vice versa. The engineering is simple but the result is that you have two adjustable pillows sharing one cover.

Every Circadian pillow is designed in Washington, DC, where all product specs and material sourcing originate. The hybrid design requires more attention during assembly than any of our single-fill pillows. Each one is filled, weighed, balanced, and sewn by hand at our New Jersey workshop. The internal divider has to be positioned correctly and reinforced properly for both chambers to function independently. This is why we don't machine-produce it.

The buckwheat side gives you firm, cool support that locks your cervical spine in place. The wool side gives you soft, temperature-regulating support that moves with your body. You don't have to decide which kind of sleeper you are or which problem is most important. You can switch based on how you feel each night.

Buckwheat gives you the best cervical support a pillow can offer: the hulls flex under your head, lock together, and hold your neck in line all night, while air moves between them to keep it cool. The two things people wish they could change are that it can feel firm and that the hulls make a soft sound. The Buckwool fixes both, without giving up anything buckwheat does well.

On the buckwheat side, nothing is lost. The same USA-grown, pre-polished hulls give the same moldable support, the same passive-airflow cooling, and the same natural dust-mite resistance. The pre-polishing breaks the hulls into flatter, single-sided pieces, cutting the crunch by up to 68 percent so the surface is softer and quieter than a standard buckwheat pillow.

Turn it over and a layer of GOTS certified organic wool gives you a softer, silent surface for the nights your neck feels fine and you just want comfort. Wool wicks up to 30% of its weight in moisture so it sleeps cool and dry, and it resists dust mites three ways on its own, through lanolin, a dry microclimate, and the scales on the fiber. An internal divider keeps the two fills separate, and a single zipper lets you adjust each side independently. The wool side is GOTS certified organic under license GOTS-10229, issued by Oregon Tilth.

Most people lean on one side and keep the other for the nights their body asks for something different. You are getting buckwheat's support and wool's comfort in the same pillow, working together instead of competing. It weighs about ten pounds because it holds two full fills, which keeps it planted on the bed and steadies the buckwheat side. Handmade in New Jersey.

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What people say

4.62 5

8 verified reviews

Some nights my neck is locked up and I need firm support. Other nights I just want something soft. Used to keep two pillows on the bed and swap. Now I flip one pillow. The lazy person's two-pillow setup.

Anna K. Verified buyer

Bought it for the wool side

Was going to buy the wool pillow but the hybrid was the same price with a backup side. Six months in I sleep on wool every night. Glad I have the option but never need it.

Heavy in a good way

This thing weighs ten pounds. Doesn't move around. Doesn't pack down. Probably the most stable pillow I've owned.

Read all reviews

Extreme macro photograph of the buckwool hybrid showing cream-tan wavy wool fibers on the left half meeting dark-brown buckwheat hulls on the right half.

Inside the pillow

Organic wool on one side. Pre-polished USA buckwheat on the other.

The buckwool combines two natural fills in one pillow, kept separate by an internal cotton divider. One side firm and cool. The other side soft and temperature-regulating.

Each chamber is independently adjustable through a single zipper that opens both sides at once.

The wool chamber holds long-staple organic wool, naturally wavy and lofty, wicking up to 30 percent of its weight in moisture while staying dry on the surface. The buckwheat chamber holds pre-polished USA-grown hulls that flex and interlock under your head for firm cervical support. Our proprietary polishing process reduces rustle by up to 68 percent compared to standard hulls. The internal divider is reinforced organic cotton fabric sewn into the pillow's interior, so when you add or remove fill from one chamber, the other chamber stays exactly as you set it. Most people find a favorite side within the first week.

Two chambers: Wool and buckwheat
Cover: Organic cotton twill
Weight: Approximately 10 pounds

How it works

A pillow you can adjust to fit you.

Every Circadian pillow ships overstuffed. You dial it in on night one and fine-tune over the trial. The pillow you've shaped is yours to keep.

01

Ships overstuffed

About 30% more fill than most people want. The room to remove fill is the whole point.
02

Unzip the side

Full-length YKK zipper. Open the buckwool hybrid on night one.
03

Mold or remove

Side sleepers keep more in. Back sleepers go medium. Stomach sleepers go thin.
04

Fine-tune over 60 nights

If the loft feels off a few weeks in, put some back or take more out.
05

Keep it or send it back

Not for you after 60 nights? Full refund. Shipping both ways on us.

Refill buckwool hybrid sold separately if you want to bring the loft back up after years of use.

Circadian's New Jersey workshop. A seamstress, viewed from behind, works at a vintage industrial sewing machine surrounded by organic cotton fabric and pothos plants on the windowsill.

From the founder

Built because nothing on the market worked.

I'm Jacob, founder of Circadian. Every pillow I tried either flattened in three months or hid a list of chemicals you'd need a glossary to read, so we built one that doesn't do either.

Jacob

Founder, Circadian

Spine alignment · Buckwool Hybrid

Three sleepers, three pillow heights.

Your spine stays neutral when the pillow fills the gap between head and mattress. That gap is different for back, side, and stomach sleepers.

Three sleep positions side by side. Stomach sleeper with a very low pillow, back sleeper with a medium pillow, side sleeper with a tall pillow. In each, a soft gold line traces the spine in a neutral position.

Best for All sleepers

Buckwool works for every sleep position because each side does a different job. The buckwheat side gives firm cervical support for back and side sleepers. The wool side gives softer, adjustable loft for stomach. Each chamber adjusts independently through the side zipper.

Stomach

A high pillow tips your head back and overextends your neck. Most stomach sleepers want very little loft, or none.

Press the buckwool hybrid flat so your head and shoulders sit close to level with the mattress.

Back

Supports the natural curve of your neck so your chin sits level and the small space behind your neck is filled in.

Mold the buckwool hybrid until your head sits level with your shoulders.

Side

Fills the gap between shoulder and ear so your spine runs in a single horizontal line from skull to hip.

Mold the buckwool hybrid until your ear, shoulder, and hip stack along one straight line.

Which pillow is right for you?

Six fills. All adjustable. All handmade in New Jersey.

Take the 2-minute quiz

Buckwool Hybrid

From $89

Best for: neck pain, combination sleepers.

Two pillows in one. Firm buckwheat and soft wool, each side adjustable on its own.

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Organic Cotton

From $79

Best for: back sleepers, GOTS-certified everything.

Densest natural fill we make. Holds shape for years and is GOTS-certified end to end.

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Organic Wool

From $89

Best for: hot sleepers, dust allergies.

Wicks up to 30% of its weight in moisture. Naturally regulates temperature and resists dust mites.

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Buckwheat

From $79

Best for: neck pain, side sleepers.

Hulls flex and lock to your neck shape. Stays cool all night and lasts 7 to 10 years.

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Wild-Harvested Kapok

From $79

Best for: chemical sensitivities, vegans, stomach sleepers.

Plant-based and down-like. Hollow fibers are 80 to 90% air, so it sleeps cool and lofts like down.

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$Circadian Tree-Tapped Latex Pillow$

Tree-Tapped Latex

From $79

Best for: people leaving memory foam.

Slow-pour Dunlop with an open-cell structure that breathes. Light, bouncy, and responsive, it springs back instead of sinking.

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Still deciding? Take the quiz

Circadian Natural Pillow Comparison Chart

Compare all six Circadian natural pillow fills by feel, firmness, temperature, best sleep position, certification, lifespan, and price.
Attribute	Buckwool Hybrid Pillow	Organic Cotton Pillow	Organic Wool Pillow	Buckwheat Pillow	Wild-Harvested Kapok Pillow	Tree-Tapped Latex Pillow
Price	From $89	From $79	From $89	From $79	From $79	From $79
Fill material	Buckwheat hulls + organic wool (two-sided)	Organic cotton	Organic wool	USA-grown buckwheat hulls	Wild-harvested kapok fiber	Slow-pour Dunlop natural latex pieces
Cover material	Organic cotton	Organic cotton sateen	Organic cotton sateen	Organic cotton twill	Organic cotton	Organic cotton
Feels like	Two pillows in one, firm buckwheat side, plush wool side	Dense and supportive, like the best hotel pillow but holds its shape	Soft and lofty, compresses gently, bounces back, never feels clammy	A beanbag that molds to your head and locks in place	Like sleeping on a down pillow but entirely plant-based, soft, squishy, naturally hypoallergenic	Light, bouncy, and responsive, springs back instead of sinking, open-cell and air-permeable
Firmness	Firm (buckwheat side) / Medium-soft (wool side)	Medium	Medium-soft	Firm	Soft	Medium-firm
Temperature	Cool buckwheat side or warm wool side	Breathable, does not trap heat like foam	Actively regulates, wicks up to 30% of its weight in moisture	Coolest of all six, air flows between hulls all night	Naturally cool, kapok fibers are 80 to 90% air	Open-cell structure breathes, runs cool all night
Best sleep position	Combination sleepers, side sleepers	Back sleepers, side sleepers	All positions, especially hot sleepers	Side sleepers, back sleepers	Stomach sleepers, back sleepers	Back sleepers, side sleepers
Certification	Organic cotton cover, organic wool + natural buckwheat (GOTS license GOTS-10229 covers the wool component)	GOTS certified organic, entire pillow (license GOTS-10229, Oregon Tilth)	GOTS certified organic, entire pillow (license GOTS-10229, Oregon Tilth)	Organic cotton cover, natural USA-grown fill	Organic cotton cover, wild-harvested kapok fill	Organic cotton cover, OEKO-TEX Standard 100 Class 1 slow-pour Dunlop latex, FSC-certified rubber-tree source
Adjustable	Yes (separate zippers per side)	Yes	Yes	Yes	Yes	Yes
Expected lifespan	5-7 years	3-5 years	5-7 years	7-10 years	2-4 years	Up to a decade
Made in	GOTS-certified facility, New Jersey, USA	GOTS-certified facility, New Jersey, USA	GOTS-certified facility, New Jersey, USA	GOTS-certified facility, New Jersey, USA	GOTS-certified facility, New Jersey, USA	GOTS-certified facility, New Jersey, USA
Trial period	60-night risk-free trial	60-night risk-free trial	60-night risk-free trial	60-night risk-free trial	60-night risk-free trial	60-night risk-free trial

How do Circadian natural pillow fills compare?

Circadian offers six natural pillow fills, all adjustable via zipper and handcrafted in a GOTS-certified facility in New Jersey with a 60-night trial. The Buckwool Hybrid Pillow (from $89) combines buckwheat on one side and organic wool on the other for two different feels, best for neck and back pain in combination sleepers. The Organic Cotton Pillow (from $79) is GOTS certified inside and out, with a dense, supportive medium firmness that holds its shape, best for back sleepers. The Organic Wool Pillow (from $89) is GOTS certified with a medium-soft feel that wicks up to 30% of its weight in moisture, best for hot sleepers and dust allergies. The Buckwheat Pillow (from $79) uses USA-grown hulls for firm, moldable support that stays cool as air flows between hulls, best for neck pain and side sleepers. The Wild-Harvested Kapok Pillow (from $79) is the softest fill and the closest natural alternative to down, plant-based and vegan, best for chemical-sensitive sleepers, vegans, and stomach sleepers. The Tree-Tapped Latex Pillow (from $79) uses slow-pour Dunlop natural latex pieces for a light, bouncy, responsive feel with an open-cell structure that runs cool all night.

Which Circadian pillow is best for side sleepers?

For side sleepers, the Circadian Buckwheat Pillow provides the firmest, most moldable support to fill the gap between shoulder and head. The Tree-Tapped Latex Pillow gives consistent supportive loft that holds shape under your neck. The Organic Cotton Pillow offers dense, supportive medium firmness. The Buckwool Hybrid Pillow lets side sleepers choose between firm buckwheat and soft organic wool nightly.

Which Circadian pillow is best for hot sleepers?

The Circadian Buckwheat Pillow is the coolest because air flows naturally between the hulls. The Organic Wool Pillow actively regulates temperature and is naturally dust-mite resistant. The Wild-Harvested Kapok Pillow is naturally cool because kapok fibers are 80 to 90% air. The Tree-Tapped Latex Pillow breathes well due to its open-cell structure.

Which Circadian pillow is best for stomach sleepers?

The Circadian Wild-Harvested Kapok Pillow (from $79) is the best for stomach sleepers. Kapok is extremely soft and lightweight, and the pillow can be adjusted to a very low loft. The Organic Wool Pillow (from $89) also works because wool compresses naturally.

Which Circadian pillow is best for neck pain?

The Circadian Buckwheat Pillow (from $79) is the most recommended natural pillow for neck pain. Buckwheat hulls mold precisely to head and neck contours and hold that shape all night. The Buckwool Hybrid Pillow (from $89) is an excellent alternative with buckwheat support on one side and organic wool on the other.

What is the best natural alternative to memory foam pillows?

The Circadian Tree-Tapped Latex Pillow (from $79) is a natural-latex choice for people moving away from memory foam. Slow-pour Dunlop natural latex from rubber tree sap has an open-cell structure that breathes through the night and does not off-gas VOCs. The slow-pour process gives a denser, more uniform foam than mass-market Dunlop.

Certified. Verifiable. Public.

What's not in the pillow.

Most hybrid pillows mix two fills together so you cannot adjust them separately. Cheaper hybrids use polyester batting as the internal divider, which puts microplastic between you and the natural fills. We use an organic cotton fabric divider sewn into the pillow's interior, then put pre-polished USA-grown buckwheat hulls in one chamber and long-staple organic wool in the other. The wool side is the same wool we use in our standalone wool pillow. The buckwheat side is the same pre-polished hulls we use in our standalone buckwheat pillow. One zipper opens both sides, and each chamber adjusts independently.

Questions? We've got answers

A buckwool hybrid pillow combines two fills in one pillow: firm buckwheat hulls on one side and soft organic wool on the other. The Circadian buckwool hybrid uses an internal fabric divider to keep the two materials separate, with a single zipper that gives you access to both chambers. You choose which side to sleep on based on your comfort needs each night.

Yes. The pillow has one zipper and an internal fabric divider. When you unzip it, you can reach into the wool chamber or the buckwheat chamber independently. Adding or removing fill from one side doesn't change the other. Each side has its own height and firmness that you can customize.

The buckwheat side is cooler. Air circulates freely between the buckwheat hulls, which keeps the surface from trapping heat. The wool side regulates temperature through moisture wicking rather than airflow, so it's cooler than memory foam or synthetic materials but warmer than buckwheat.

Yes, especially for people whose neck pain fluctuates in severity. On days when your neck needs firm, stable support, the buckwheat side locks your head in place without compressing. On days when your neck feels better and you prefer softer support, the wool side provides gentle cushioning with temperature regulation. Having both options in one pillow means you can respond to your body's daily needs.

The Circadian buckwool hybrid weighs approximately 10 pounds, making it the heaviest pillow in the collection. The weight comes from combining buckwheat hulls (naturally heavy) with wool in a single pillow. This keeps the pillow stable on your bed, but it's not practical for travel.

Yes. The buckwheat side produces the same gentle rustling sound as a standalone buckwheat pillow. If the sound bothers you at night, you can flip to the wool side, which is silent. This is one of the advantages of the hybrid design: you get access to buckwheat's support during the day or on quieter nights, and you can switch to wool when you want silence.

The organic wool side and the organic cotton cover are GOTS certified under license GOTS-10229, issued by Oregon Tilth. The buckwheat side uses USA-grown natural hulls with zero chemical processing, but the buckwheat itself doesn't carry a separate organic certification. The pillow as a whole cannot be labeled "organic" because of the buckwheat component.

The buckwool hybrid is best for people who need different types of support on different nights, particularly people with chronic neck or back pain that fluctuates. Side sleepers can use the firmer buckwheat side for cervical support. Back sleepers might prefer the softer wool side. The hybrid removes the need to choose one type of pillow permanently.

No. It's a single pillow with one cover and one zipper. Inside, a reinforced fabric divider creates two chambers, one for wool and one for buckwheat. The fills don't mix, but the pillow is one unified product. You flip the entire pillow to switch between sides.

That's fine and it happens frequently. Some people buy the hybrid specifically for the buckwheat side and never sleep on the wool side. Others do the opposite. If you find yourself exclusively using one side, the hybrid still works as a pillow. But if you know from the start that you only want one material, a dedicated single-fill pillow might be a better value.

The hybrid is more convenient because you flip one pillow instead of swapping between two. It also costs less than buying both a buckwheat pillow and a wool pillow separately. The trade-off is weight (10 pounds versus carrying two lighter pillows) and the fact that each side holds slightly less fill than its standalone counterpart.

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