Organic Cotton Pillow Fill Refill
3 lb
$39.00
Skip to product information
Organic Cotton Pillow Fill Refill
$39.00
Buying for two? Add a second pillow and save 15% automatically at checkout.
Cotton fiber is the densest natural pillow fill we use, which is why a Circadian Organic Cotton Pillow holds shape for years instead of months. When the loft eventually settles, you don't need a new pillow. You need more of what's already inside it.
This refill is the same Global Organic Textile Standard (GOTS) certified organic cotton fill used in every Circadian Organic Cotton Pillow, sold by weight so you can top up the loft to your preferred firmness. Open the pillow's side zipper, add cotton until the height feels right, seal it back up. Standard pillows typically need a top-up every 18 to 24 months. Body pillows hold a larger fill volume and tend to go longer between refreshes.
Certified under Oregon Tilth license GOTS-10229, publicly searchable on the GOTS database. Processed without chlorine bleach, synthetic dyes, or chemical softeners. Same fiber, same supply chain, same audit trail as the pillow it goes into.
What you get
3 pounds of GOTS certified organic cotton fill in a sealed bag. Enough to fully refresh a Standard pillow or top up a Queen or King. For Body pillow refills, plan on two bags.
How to use it
Open the side zipper on your Circadian pillow, add cotton by handful, compress as you fill to distribute evenly, and seal it back up. Cotton takes a few nights to settle into the new loft. If you've added too much, remove some and store the rest for the next top-up. Cotton fiber holds for years in a sealed bag.
60-night trial
Sleep on it for 60 nights. If it's not right, send it back free for a full refund. Return policy
Free shipping both ways
Free shipping both ways. Most orders arrive in 4-7 days. Get in touch if you need an update on yours.
Designed in DC · Handmade in New Jersey
Every Circadian pillow is designed in Washington, DC and handcrafted in our New Jersey workshop. The product specs, fill ratios, material sourcing, and adjustable-zipper system all originate from our DC headquarters. Manufacturing happens stateside by skilled workers who specialize in natural-fill bedding.
Nothing toxic, ever
Plant or animal fibers only, with no chemical processing in the build. The cover, fill, thread, and dye process all carry independent certification (GOTS for cotton and wool fills, OEKO-TEX for latex).
Designed in Washington, DC · Handmade in New Jersey
Questions? We've got answers
What is a buckwheat pillow?
Buckwheat hulls are the outer shells of buckwheat seeds. They’re firm, breathable “micro-hulls” that shift and lock into place, creating stable support with airflow between the hulls.
- Best at: Support, neck alignment, staying cool, adjustability
- Best for: Back sleepers, combo sleepers, people who want a “structured” pillow
- Not ideal for: Those who want a plush, cloud-soft feel (it’s supportive, not fluffy)
Is a buckwheat pillow too firm?
Buckwheat is naturally supportive and can feel firm at first. Most people do best after removing some hulls and shaping a “neck ridge” so the head can settle.
Is buckwheat noisy?
Buckwheat has a natural rustle. If you’re sound-sensitive, consider buckwool (gentler) or a quieter fill like wool/kapok/latex.
Why does buckwheat feel heavy?
The density is part of why it supports alignment so well, but it also means it’s heavier than most conventional pillows.
Does buckwheat put pressure on the ear?
It can for some side sleepers. If you’re ear-sensitive, buckwool or wool is often the better “supportive but gentler” option.
How do I adjust loft correctly?
Start by removing a small amount of fill, then build a shallow “nest” with a slight ridge under the neck. Small changes can make a big difference.
How much fill is in each pillow?
Each Circadian pillow ships overstuffed by design so you can dial in the perfect height and firmness. Use the zipper to remove a little fill until your neck feels aligned and your shoulders can relax. Then store the extra fill for seasonal adjustments or future top-offs.
Are the buckwheat hulls certified organic?
Our buckwheat hull fill is not certified organic. If third-party certification is a must-have, we can point you to our certified organic options (cotton/wool).
That said, our buckwheat is air-jet cleaned and 1-sided vs the typical pyramid shape. This results in softer, quieter buckwheat hulls.
How do you clean the hulls? Do you use chemicals or roasting?
We use a proprietary cleaning method using air-jet propulsions to avoid chemical treatments and avoid roasting/heat processing. We use multi-step air-cleaning and dust-removal methods designed to reduce fine particles and improve “pillow-grade” feel. This typically eliminates 60% of the buckwheat pillow crunch.
Is buckwheat good for hot sleepers?
Often yes, air moves through the hull structure better than many foams, but feel preference matters more than any single feature.
Can I buy extra fill later?
Yes, if you want to refresh loft over time or use fill for other pillows/projects, we can help with bulk fill. Contact us here.
How do I choose the right pillow for me?
The fastest way is our pillow quiz (built to match sleep position + preferences to the right fill). If you’d rather talk to a human, email us and we’ll recommend a fit based on what you’re trying to solve.
When will I get my order?
We ship within 1-2 business days. Standard shipping takes 3-5 business days within the US. Contact us here if you'd like the tracking number and expected delivery date.
Are your pillows adjustable?
Yes, all of our fills can be adjusted by removing or adding fill through the zippered opening until the loft feels right for your neck and sleep position.
When will I get my order?
We ship within 1-2 business days. Standard shipping takes 3-5 business days within the US. Email us at jacob@circadianrest.com if you'd like the tracking number and expected delivery date.
What is your sleep trial / return policy?
We honor a 60-night trial. Because many pillows can’t be resold after use and shipping heavy natural fills can be wasteful, we often use a “second life” return approach (keep/gift or donate/rehome) while still taking care of you financially.
Will this help with neck/shoulder discomfort?
Many customers shop for better alignment and support. The key is matching sleep position + loft + feel preference; we’re happy to help you get the fit right.
Does it have an odor when it arrives?
Natural materials can have a mild “fresh material” scent at first. Airing it out (and using a breathable pillowcase) typically resolves this quickly.
Can I get material samples before buying?
Yes, we can mail small material samples so you can feel the difference first (we typically charge a small amount to cover shipping). Please email us at jacob@circadianrest.com to request material samples.