Sleep Position Guide · Side, Back & Stomach

How to choose a natural pillow for your sleep position

Written and reviewed by Jacob Katz and Kris Estigoy · Circadian, New Jersey

If you sleep on your side, back, or stomach, this conversation explains how your position sets the pillow height first and the fill second, which natural fill fits each position, and how to tune an adjustable pillow to your own neck.

Watch on YouTube. Full transcript below.

Why sleep position decides the pillow

The best natural pillow for your sleep position is an adjustable one set to the right height. Side sleepers need the tallest, firmest loft to fill the shoulder gap, which points to buckwheat or shredded latex, or cotton kept full. Back sleepers need a medium loft that cradles the neck, which points to buckwheat, latex, or wool. Stomach sleepers need the lowest, softest loft to keep the neck neutral, which points to kapok, or cotton with fill removed. Every Circadian pillow ships overstuffed with a side zipper, so you remove fill to match your position.

  • Your position sets the pillow height first and the fill second; the wrong height bends your neck no matter the material
  • Side sleepers have the biggest shoulder-to-head gap, so they need the tallest, firmest support that holds
  • Back sleepers need a medium loft that fills the curve behind the neck without pushing the head forward
  • Stomach sleepers need the flattest, softest pillow so the neck stays neutral instead of cranking back
  • Every Circadian pillow ships about 30% overstuffed with a side zipper, so you tune the loft to your own body

What this video covers

How to choose a natural pillow for your sleep position

  1. Start with height, not fill: tall and firm for side sleeping, medium for back, low and soft for stomach.
  2. Side sleepers, keep a firm fill full to bridge the shoulder gap: buckwheat, shredded latex, or cotton kept packed.
  3. Back sleepers, go medium and cradle the neck curve with buckwheat, latex, or softer wool, usually removing a little fill.
  4. Stomach sleepers, go low and soft with kapok or cotton set low, skip the firm tall fills, and pick an adjustable pillow so you can tune the loft to your own neck.

Full transcript

Does your sleep position change the pillow?

HostIf you sleep on your side, your back, or your stomach, which natural pillow should you be on? Let's sort it out.

ExpertHere is the part most people get backward. Your sleep position sets the height of the pillow first, and the fill second. Get the height wrong and the best fill in the world will still leave your neck bent. So we start with what your position needs, then pick the material.

HostOkay. What does each position need?

What each position needs

ExpertIt comes down to the gap you are filling between your head and the mattress. A side sleeper has the biggest gap, because your shoulder props your head up off the bed. So a side sleeper needs the tallest, firmest pillow, enough loft to bridge that shoulder-to-ear distance and keep your spine in a straight line.

HostAnd if it is too low?

ExpertYour head drops toward the mattress and your neck bends down all night. Too high and it cranks the other way. Side sleepers need height, and they need it to hold, which is why a firm fill that does not flatten matters most for them.

HostWhat about back sleepers?

ExpertSmaller gap, so less height. On your back you want a medium loft that cradles the natural curve of your neck without shoving your head forward. The job there is to fill in behind the neck while your head settles level. A pillow that runs too tall tips your chin down toward your chest.

HostAnd stomach sleepers.

Stomach sleepers, and why height is the decision

ExpertThe flattest, softest pillow you can find, and some stomach sleepers do best on almost nothing at all. Lying face down, your head is already near mattress level, so any real loft bends your neck backward and turns it to the side at the same time. Stomach sleeping is already the hardest position on your neck, so the pillow's whole job is to stay out of the way.

HostSo before we even talk materials, height is the decision.

Why an adjustable pillow is the key

ExpertAnd this is what makes it easy with our pillows. Every one of them ships overstuffed, about thirty percent more fill than most people want, with a zipper on the side. You open it and remove fill until the height matches your position. Side sleeper, keep it full and tall. Back sleeper, take a little out for medium. Stomach sleeper, take a lot out and go low. The pillow adjusts to you instead of the other way around.

HostThat is a real difference from a pillow that comes at one fixed height.

ExpertA memory foam block arrives at whatever loft it arrives at, and you live with it. Ours you tune. The same pillow becomes three different heights depending on who is sleeping on it.

HostAlright, the fills. Start with side sleepers, since they need the most.

The best fills for side sleepers

ExpertSide sleepers want height that holds and firm support under the neck. Three fills do that best. Buckwheat is the top pick, because the hulls lock into place and hold your head right where you set it, and you can add hulls to build the height a broad shoulder needs. Shredded latex is next, buoyant and springy, cushioning your ear and cheek while it holds the neck up. And the buckwool hybrid gives you a firm buckwheat side built for this.

HostWhat about cotton for a side sleeper?

ExpertCotton works if you keep it packed full, because it is our densest fill and it gives a firm, tall surface. The one to watch for side sleeping is kapok, since it is soft and low by nature. You can pack it fuller for height, but if you have broad shoulders and need firm support, buckwheat or latex will serve you better.

HostNow back sleepers.

The best fills for back sleepers

ExpertBack sleepers have the most room to choose, because medium loft is the forgiving middle. Buckwheat is excellent here too, since that moldable support holds the curve of your neck while your head rests level. Latex gives you the same medium support with a springier feel. And if you want something softer under a lighter head, organic wool is a lovely back-sleeper pillow, medium and cradling. With any of them, a back sleeper usually takes a little fill out to bring the height down.

HostAnd stomach sleepers, the tricky ones.

The best fills for stomach sleepers

ExpertFor stomach sleepers, go soft and low. Kapok is the answer, our lightest, most down-like fill, and you pull fill out until it is barely there so your neck stays neutral. Cotton is the backup, because you can remove a good amount and get a low, flat profile. The fills to skip if you sleep on your stomach are the firm, tall ones, buckwheat and the buckwool hybrid, because their whole strength is holding height, and that is the opposite of what a stomach sleeper's neck wants.

HostWhat about people who move around all night and end up in every position?

Combination sleepers

ExpertMost of us are combination sleepers, and there are two good moves. First, tune an adjustable pillow to your main position, the one you fall asleep in and spend the most time in, and it will handle the rest well enough. Second, if your nights are split down the middle, the buckwool hybrid gives you a firm buckwheat side for the side-sleeping stretches and a soft wool side to flip to, so you carry two heights in one cover.

HostLet's make this practical. I just got my pillow. How do I set it for my position?

How to set the pillow for your position

ExpertLie down the way you really sleep, on your own bed, because a soft mattress lets your shoulder sink and changes the math. Have someone look at your neck from behind, or check it in a mirror. Your nose, chin, and breastbone should line up, with your head neither dropping toward the mattress nor propped up toward the ceiling. If your head sits too high, open the zipper and take fill out. Too low, add some back. Small handfuls, and you feel the change with each one.

HostHow long until it is dialed in?

ExpertSome people land it the first night in two minutes. Others take a week of small tweaks as their body tells them what it wants. Both are normal, and you have sixty nights to get there. Pulled out too much on night three? Put some back. It is your pillow to tune.

HostQuick lightning round. Side sleeper, one pick.

ExpertBuckwheat, kept full.

HostBack sleeper.

ExpertBuckwheat or latex at medium, or wool if you want it softer.

HostStomach sleeper.

ExpertKapok, low. Cotton if you want a little more structure.

HostCombination sleeper.

ExpertAn adjustable one tuned to your main position, or the buckwool hybrid for two heights in one.

What's certified

HostAnd the certification, since people ask.

ExpertEvery one of these has a GOTS certified organic cotton cover under license GOTS-10229, issued by Oregon Tilth. On the wool pillow and the cotton pillow, that organic certification runs through the whole pillow, fill included. On the others it covers the cover, and the fill is described as what it is. All handmade in our New Jersey workshop.

HostSo the short version.

ExpertMatch the height to your position first. Side sleepers go tall and firm, buckwheat or latex. Back sleepers go medium, buckwheat, latex, or wool. Stomach sleepers go low and soft, kapok or cotton. And because every Circadian pillow adjusts through the side zipper, you are not guessing, you are tuning it to your own neck. Sixty nights, free shipping both ways, and a full refund if it is not for you.

The short version

HostThere it is. Your sleep position sets the height, the height narrows the fill, and an adjustable pillow lets you land it right. Thanks for hanging out with us, we will catch you on the next one.

Find the pillow for your sleep position at circadianrest.com. Every Circadian pillow has a GOTS certified organic cotton cover, license GOTS-10229 (Oregon Tilth); on the wool and cotton pillows the certification covers the whole pillow, and on the buckwheat, kapok, latex, and buckwool pillows it covers the cover. Every pillow ships overstuffed with a side zipper, so the loft adjusts to any sleep position. Handmade in New Jersey since 1981.