Your Circadian Owner's Guide

Mold it to your neck and it holds all night.

This is the only pillow we make that does not compress under your head. It shifts once while you settle, then locks, and stays there until morning.

Handmade in New JerseyUSA-grown hulls60-night trial
Begin
What you're not sleeping on

The list most pillow makers hope you never read. None of it is in a Circadian pillow.

What you brought home

Foam sinks under you all night. Hulls do not.

This is the firmest fill we make and the strongest neck support in the collection. The hulls move into position and then interlock, so the shape you make when you lie down is the shape you still have when you wake up. Most people who try it call it the best pillow they have ever owned.

Fill
USA-grown hulls, air-jet polished and sterilised with ultraviolet light
Cover
Organic cotton
Weight
About 8 lb, and 7 to 9 once you have adjusted it
Adjust
Full-length zipper, hull refills sold
Made
Nobody made this one until you ordered it. Cut, filled and closed by hand in New Jersey
Before a refill
Three to five years
They flex, then they lock.
Because you wake up sore

They flex, then they lock.

Thousands of hulls shift as you settle and then interlock into a cradle that holds your neck in line rather than letting it drop. That is why this is the pillow physical therapists tend to name, and it is the reason most people buy it.

Every hull is polished before it goes in.
The part nobody else does

Every hull is polished before it goes in.

A raw buckwheat hull is a rough pyramid with sharp edges, and a pillow full of them sounds like gravel. We polish ours smooth first, which breaks those edges down and cuts the movement noise by up to 68 percent. They are USA-grown, air-jet cleaned and UV sterilised, with no chemical treatment anywhere in the process.

We bought every one of them

How the Circadian Buckwheat Pillow compares.

20 buckwheat pillows, bought and slept on. Every cell below is that brand's own published wording.

  • Nights to decide60, slept on2 of the other 19 match it
  • RefillsAvailable to buy11 of the other 19 sell them. Refill yours
Circadian Buckwheat Pillow compared with other buckwheat pillows on verifiable certification, adjustability, refills, sleep trial and returns.
PillowPriceHow it was made What the certificate coversCan you change itTrial and returns
Circadian Buckwheat PillowNew Jersey, handmade since 1981 $149~8 lbs (7-9 adjustable) · $18.62/lbHulls air-jet polished and UV-sterilised. No chemical wash, no fumigation. Cover certified, fill outside any standardOrganic cotton cover. Buckwheat hulls are an agricultural byproduct, outside the scope of any textile standard. Full-length zipperHull refills sold, so you can top it up 60 nightsFree shipping
Hullo BuckwheatDuluth MN $129~9 lbs · $14.33/lbStandard milled; minimal cleaning specified No third-party certification Yes (zippered)Yes ($30/2 lb refill) 60 nightsNo (customer pays)Yes (no minimum)
Comfort Pure Cotton+BuckwheatUSA claim $94Standard milled No third-party certification YesLimited 100 nightsYes (free returns)No ($149 threshold)
Sweet Zzz BuckwheatDesigned USA; made imported $979 lbs · $10.78/lbMulti-step cleaning Licence number published YesNo (extra fill bag) 50 nightsYes (free shipping)Yes (pillow only)
Sachi Organics BuckwheatAlbuquerque NM $63~5.5 lbs · $11.45/lbStandard milled No third-party certification YesYes 30 nightsNo (customer pays)Yes (free under $300)
PineTales SignatureScottsdale AZ $17912-13 lbs · $14.32/lbTriple-cleaned whole hulls No third-party certification YesYes 30 nightsNoYes (no minimum)
Rawganique IllinoisIllinois $938 lbs · $11.62/lbStandard milled No third-party certification Yes (zippered)Yes 30 nightsNo (customer pays)No ($350 threshold)
ComfyComfy ComfySleepOntario CAN $1108 lbs (+ 2 lbs extra bag) · $13.75/lbStandard milled Claimed, no number published YesYes 30 nightsNo (cross-border)Yes (free $45+)

Green means the brand's own published wording meets the test, amber means it is claimed but not evidenced, grey means it does not. Open any row to read the wording it was graded on. Certifications re-checked live on 31 July 2026. Prices and policies collected May 2026 from each brand's product page; certifications re-verified 31 July 2026. How we test and rank

See the Circadian Buckwheat Pillow

The fill in the Buckwheat Pillow
As featured in

Green Child Magazine

“Circadian’s buckwheat hulls are pre-polished, and were tested to be up to 68% quieter than standard buckwheat hulls.”

Amity Hook-Sopko, Green Child Magazine

Her piece is a buying guide, not a review of ours, which is why the one thing she stopped to verify is the one thing worth reading. This is your pillow she is describing.

Read the piece

The ones people filmed themselves.

Not our shoot. Tap any one to go to the post it came from.

Where it came from

Your pillow is full of something the food system throws away.

Buckwheat hulls are the shell around the grain. They are inedible, so every mill has to remove them before anyone can eat the groat.

Buckwheat Pillow, close enough to see the fill itself

  1. Grown on regional farms in the United States

    Buckwheat establishes, flowers and matures in seventy to ninety days on half the soil moisture a soybean needs, and it flowers for up to ten weeks feeding hover flies, predatory wasps and lady beetles. Farmers plant it to fix a field, not to fill a pillow.

  2. Polished with air, sterilised with light

    A raw hull is a three-sided pyramid with sharp edges, which is why most buckwheat pillows sound like gravel. Ours are pre-polished and air-jet cleaned so those edges break into flat sides, then sterilized with ultraviolet light rather than washed in anything.

  3. Filled and closed by hand in New Jersey

    Weighed to the ounce, because eight pounds of hulls behaves very differently from nine.

Make it yours

Pour some out until the height is yours.

It arrives full, so every adjustment is a subtraction. The right amount is the amount that keeps your neck level, and that is different for a side sleeper and a back sleeper.

  1. Make a mound.

    Push the hulls into a low mound in the middle and rest your head into it, rather than lying flat on top of them.

  2. Pour out what you do not need.

    Open the side zipper over a container and tip. Side sleepers keep more, back sleepers keep less, stomach sleepers keep very little.

  3. Sleep on it three nights.

    Hulls feel unfamiliar on night one to nearly everyone, and nearly everyone stops noticing by night three. Judge it then, not before.

  4. Reshape it each night.

    Ten seconds of pushing the hulls into a mound is part of using this pillow, the same way you fluff any other.

  5. Keep the extras.

    Store them dry. They go back in whenever you want more height.

The side zipper on the Buckwheat Pillow, open
How you sleep

How much you keep depends on how you sleep.

It arrives full. Pour the extras into a container and keep them; putting hulls back is as easy as taking them out.

The Buckwheat Pillow on a made bed

Spine alignment · Buckwheat

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 Back & side

Buckwheat is best for back and side sleepers because the hulls lock into firm cervical support and don't compress. Stomach sleepers can mold the hulls flat or pour some out through the side zipper, but if you want soft and low all the way down, cotton or kapok is the better fit.

Stomach

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

Press the buckwheat 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 buckwheat 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 buckwheat until your ear, shoulder, and hip stack along one straight line.

Side · keep it tall

Keep most of the hulls

The gap between ear and shoulder is the widest of the three positions. Mound the hulls high in the middle and rest your head into the mound rather than on top of it.

Back · middle ground

Pour out a cup or two

You want the curve of your neck supported and your chin level. Take out a cup, sleep on it, take out another if your chin is still tipped forward.

Stomach · take most of it out

Leave a shallow layer

Stomach sleeping and a full buckwheat pillow do not get along. Empty most of it out, or consider that kapok may suit you better and we will help you swap.

Keep it for years

Never wash the hulls.

Everyday

Empty them first

Pour the hulls into a dry container before the cover goes anywhere near water.

Every few months

Wash the cover cold

Machine wash cold, air dry, then refill. Sponge spots with cool water in between.

Once a year

Air the hulls in the sun

Spread them on a tray in sunlight a few times a year to keep them dry and fresh.

Hulls last for years, then slowly break down into finer pieces. When that happens you refill through the zipper and the pillow is new again, which is why this is the one pillow you may never replace.

A few last questions

The ones we hear most.

There is a soft rustle when you move, more like dry leaves than gravel, because we polish every hull smooth first. That cuts the sound by up to 68 percent against unpolished hulls. Most people stop noticing within a week.

Then there are too many hulls in it. Pour some out. Most people take out more than they expect on the first night, and the pillow is designed for exactly that.

Hulls are dense, which is also why the pillow stays where you put it instead of sliding around. A Standard runs about eight pounds.

Three to five years of nightly use before they start breaking down. Replacement hulls are the same USA-grown, polished hulls, and refilling costs a fraction of a new pillow.

The rest of your bed

What goes well with this one.

The Buckwool hybrid pillow

Buckwheat hulls in one chamber, wool in the other, sewn apart so you can flip between a firm night and a soft one without owning two pillows.

See the Buckwool

The organic wool duvet

Wool moves moisture instead of trapping it, which is why one duvet works in January and again in July. GOTS Certified Organic on the fill and the shell both.

See the wool duvet
Before you go

That is everything. Sleep well.

Any question at all, write to jacob@circadianrest.com. Jacob reads and answers these himself.