How many cotton comforter makers say the fill is cotton, and how much of it is inside?

This guide is for: people who want to know what fills a cotton comforter before paying for one, and anyone comparing a product page with its sewn-in label.

You can download the full tally as a CSV file and check every count below against it. Our guide to whether a cotton comforter is made of cotton inside covers the fills themselves. This page counts what sellers tell you.

1. 9 of 25 pages state a fill weight, and 5 of 25 name a certificate with a number you can check with the body that issued it (dataset).

1. 23 of 25 pages explain washing. You learn more about how to care for one of these comforters than about what is inside it (dataset).

Each section opens with a one-sentence answer. Then come the counts and their sources. A dataset link sits next to each count, so you can check any figure against its row.

How many cotton comforter makers say the fill is cotton?

Twelve of the 25 makers' pages we read say the fill is cotton, and the other thirteen leave a buyer without that answer on the page.

We read 25 makers' product pages on 2026-11-11, and all 25 were readable (dataset). Each page got seven questions. The answers sort into three buckets, from the questions most pages answer to the ones few of them answer:

• Most pages answer it: washing (23 of 25), country of manufacture (16 of 25) and a trial or return window (16 of 25).
• About half answer it: whether the fill is cotton (12 of 25).
• A minority answer it: fill weight (9 of 25), where the cotton was grown (9 of 25) and a certificate with its number (5 of 25).

Source: our count of 25 makers' pages, read on 2026-11-11 (dataset). In order: 12, 9, 5, 9, 16, 23 and 16.

This matters if you want cotton inside as well as outside. A name with cotton in it settled the fill question on only about half of these pages. For the rest, check the label. The questions about what is inside got the fewest answers.

How did we count what each maker's page says?

One pass, one day, 25 US product pages, each saved as read, and a yes only where a quote on the page supports it, never a guess.

The population is 25 comforters, duvet inserts and quilts sold to US buyers as cotton or organic cotton. We read each one on its maker's own product page. Store and marketplace listings were left out. All 25 were read on one day, 2026-11-11. Each page was saved as read.

A page scored a yes only where a quote on that page answers the question. So a certificate logo with no number scores no on the certificate question. A page that calls a comforter natural without naming the fill fiber also scores no on the fill question. The quote has to be on the page, where you or anyone else can find it.

Nothing was weighed, washed or tested here. Each yes records what a maker declares, and none of it was verified. The count tells you how often sellers answer a question. It cannot tell you whether the answer is right.

We chose makers' own pages because that is where a maker speaks for itself. A store listing can shorten or reword a maker's details, and you would then be counting the store's editing. Want to repeat the count? Read the same pages today and compare them with the dataset you downloaded. Some will have changed. That drift is part of what a dated count is for, and it is why every figure here carries its read date.

What does US law require a comforter label to say about the fill?

Federal rules say fill used for warmth must have its fiber named on the label, and some states add a law label listing the filling.

The federal Textile Act exempts filling used for structure, but not filling put in for warmth (15 U.S.C. § 70j). A comforter's fill is there to keep you warm. That exemption also falls away once a maker states the fill's fiber content in an ad or on a label (15 U.S.C. § 70j). The regulation says the fiber content of fillings is to be set out separately, and its sample label line reads "Filling: 100% Cotton." (16 CFR Part 303).

Some states add a second tag, which you will see called the law label. Arkansas's rule says the contents, uses and percentage of filling materials in bedding must be stated on the label (Arkansas bedding rule). So the comforter itself should tell you what is inside. The gap is on the product page. That is the page you see first, and the one most people buy from.

Can a comforter sold as organic cotton have a different fill inside?

Yes. The word cotton in a product name can describe only the outer shell, and several sellers' own pages pair a cotton shell with down.

The clearest pages say so outright. The Company Store's page lists an organic cotton cambric shell certified to OCS, with RDS-certified white down fill. Puredown's page pairs an organic cotton shell certified to GOTS with 90% white down. We read the four pages below as examples, not as a sample, and listing them ranks nothing.

Every name in that table puts cotton first. Every fill is something else. None of it is hidden, because each page states both layers. The trouble starts on a page that says "organic cotton" once and stops. Then you cannot tell which layer the words cover. The sewn-in label is your fallback, because the rules set the fill's fiber out separately from the shell (16 CFR Part 303).

How much fill is inside, and how many makers say?

Nine of 25 pages state a fill weight. Without it you cannot compare warmth between two comforters of the same size from different makers.

9 of 25 pages state a fill weight (dataset). The other 16 leave it out. That figure says how much material is inside. A warmth word with no number behind it is hard to compare across makers.

Pages give weight in two forms. Some state total ounces for each size, like the queen figure of 29 oz in the table above. Others state grams per square meter, written GSM, which describes a patch of the comforter rather than the whole. To turn GSM into ounces per square yard, divide by 33.9. A 300 GSM fill works out to about 8.8 oz per square yard.

Weight only compares like with like. An ounce of down and an ounce of cotton do different work. The 29 oz and 19.8 oz figures above describe down comforters, so they tell you nothing about a cotton one. Between two cotton-filled comforters of the same size, the heavier fill will usually give you more height and more warmth. Our guide to duvet fill weight in ounces and GSM sets out what each weight does on the bed.

No weight on the page? Ask the maker for the fill in ounces for your size. Any maker that knows the fiber should know the weight too. When you get a figure, check whether it is total ounces or per square yard. The two are easy to mix up.

How can you check a comforter's certificate number yourself?

Five of 25 pages name a certificate with its number. With that number, you can look the certificate up in the standard's own free checker.

5 of 25 pages name a certificate with its number (dataset). That number is what turns a claim into something you can check. A logo alone gives you nothing to search for.

OEKO-TEX makes the check easy. You can scan the QR code on the label or enter the certificate number in the OEKO-TEX Label Check, and each certificate is issued for one year (OEKO-TEX Standard 100). That label covers textiles tested for harmful substances. It is not an organic claim, so it tells you nothing about how the cotton was grown.

Claims of certified organic have rules too. A finished textile that implies it is certified organic must meet either the USDA organic regulations or GOTS (Organic Trade Association). A certificate number is the firmest thing a page can give you, and you are entitled to ask the maker for one when the page leaves it out.

Do comforter pages say where the cotton was grown and where it was made?

Sixteen of 25 pages name the country the comforter was made in, but only nine say where the cotton itself was grown, a separate fact.

16 of 25 pages state the country where the comforter was made, and 9 of 25 state where the cotton was grown (dataset). Those are two separate facts. A page can answer one and skip the other, and our count does not tell you how many pages answer both.

The federal rules require the country of origin on the label (16 CFR Part 303). So you should find the made-in fact on the comforter even when the page leaves it out. A made-in line can describe only the last steps of the work. The regulation's own sample reads "Comforter Filled, Sewn and Finished in the U.S." (16 CFR Part 303). One seller's page says its comforter is filled and finished in Seattle (Feathered Friends). Neither line says where the cotton grew.

Where the cotton grew is the harder fact for you to find. The federal label covers fiber content, country of origin and the name of the maker or dealer (16 CFR Part 303), and the farm country is not on that list. Most pages here leave it out. If it matters to you, ask the maker which country the cotton came from. A page that already says gives you something most pages in this set do not.

What do comforter pages say about washing and returns?

Care is the best-covered question: 23 of 25 pages say whether the comforter can be washed, and 16 state a trial or return window.

23 of 25 pages say whether the comforter can be washed, and how (dataset). Care is the question these pages answer most often. The fill comes well behind.

A washing line is only as useful as its detail. "Machine washable" does not tell you whether your machine can hold a queen comforter. Nor does it say how long the fill takes to dry through. Our guide to washing a cotton duvet covers the machine size it needs and the drying that follows.

16 of 25 pages state a trial or return window in nights or days (dataset). The other 9 do not. The federal label covers fiber content, country of origin and the maker or dealer's name (16 CFR Part 303), and a return window is none of those. It is a seller's policy, so you will only find it on the product page or the seller's policy page.

No window on the page? Ask before you order. You should also ask whether a washed comforter can still go back, because some trials end once the bag is opened. A trial like that is worth less to you than its length suggests.

What can a count of product pages not tell you?

It shows what makers chose to publish on one day. It cannot show whether a claim is true, or what makers outside the listed 25 say.

This count shows what makers chose to publish about 25 products on one day. It cannot show whether any claim is true. A page that says the fill is cotton may be right or wrong. We did not open a comforter. We also did not look up any certificate number with the body that issued it.

It also cannot speak for makers outside the 25. Pages change, so a page that scored no on 2026-11-11 may answer the question next month. A no means only that the answer was not on that product page. The maker may still print it on the sewn-in label, in a separate FAQ, or in an email reply to you.

The set is small. One page is 1 of 25, so each page moves a share by 4 percentage points. Read the shares as a picture of this set, not as a rate for the whole market.

Want to test the pattern yourself? Pick a comforter you are considering and ask its page these seven questions. You will know within a few minutes how much it tells you, and which answers you still need from the label or the maker.

Common questions

Six short answers about what a cotton comforter's product page says, what it leaves out, and how you can check the parts it does state.

Does "organic cotton comforter" mean the fill is organic cotton?

Not always. On the four pages in the table above, organic cotton names the shell and the fill is down or a synthetic. Look for a line naming the fill on its own. Or check the sewn-in label (16 CFR Part 303).

Where can I find what is inside if the page does not say?

Check the sewn-in labels first. The fiber label should name the fill, and so should the law label in states that require one. Shopping online? Email the maker and ask for the fill fiber and its weight in ounces.

How do I check an OEKO-TEX certificate?

Enter the number from the label in OEKO-TEX Label Check, or scan the label's QR code (OEKO-TEX). Then check that the company listed matches the one selling you the comforter. A mismatch is worth asking about.

Is a fill weight in grams the same as one in ounces?

They measure fill in different units, and sometimes over different areas as well. Total ounces describe the whole comforter in one size. GSM describes one square meter. Divide it by 33.9 and you get ounces per square yard.

Does "made in USA" mean the cotton was grown in the US?

No. A made-in line names where the comforter was made, which can mean only filling and sewing. In our count, 16 of 25 pages named the country of manufacture and 9 of 25 named where the cotton grew (dataset).

Can I use this count to judge one maker?

No. The count describes the set, and it records declarations rather than checks. Use these seven questions as a checklist for any page you read. Then confirm the answers on the label.