What cotton fill is | Organic Cotton Pillow

What is the fiber inside a cotton pillow?

Seed hair from the cotton plant, ginned to strip the seeds, then opened or combed for bulk and spring instead of spun into yarn.

Cotton fill starts as the fiber that grows on cotton seeds. A gin pulls the seeds out and leaves a soft, tangled mass of short plant hairs. For sheets, mills spin that fiber into yarn. For a pillow, makers open it into tufts or comb it into thin webs, because a fill needs bulk more than it needs strength.

Fiber length decides how long batting holds together under a head, and most pillows hold the same kind. A pillow that names no fiber almost certainly holds upland cotton, about an inch long. Upland makes up 97% of what is grown in the United States (CottonWorks). That inch is what the USDA records as staple code 32 (USDA AMS). Pima is a different species with longer fibers, sold as extra-long staple.

Cotton also drinks water. Textile engineers list its moisture regain, the water a fiber holds as a share of its dry weight, at 8.5%, against 0.4% for polyester (ACS ChemMatters). That thirst is why a soaked cotton pillow takes so long to dry, and why most makers tell owners to keep the fill out of water.

What makes cotton fill organic, and how much cotton is grown that way?

Organic is a farm rule plus a processing standard. Only a thin slice of the world's cotton qualifies, and less of it ends up in pillows.

Organic describes how the cotton was grown and handled, and the fiber itself looks and feels the same. In the US, organic fiber must be grown without toxic and persistent pesticides, synthetic fertilizers or genetic engineering (Organic Trade Association). The Organic Trade Association also notes that the USDA farm rules set no processing standard for textile products.

GOTS, the Global Organic Textile Standard, covers that processing. The USDA allows textiles that meet GOTS to be sold as organic in the United States (USDA AMS). A GOTS "organic" label means at least 95% organic fiber, and "made with organic" means at least 70% (The Roundup).

Organic cotton is rare. By Textile Exchange's estimate, 1.4% of all cotton grown in 2020/21 was organic (Textiles Partnership, citing Textile Exchange). So a pillow labeled organic cotton is drawing on a small crop, and the label is worth reading for which part of the pillow it covers.

How do staple, form and weight fit together in one pillow?

Fiber length sets how well the cotton holds together, form sets how it feels, and weight sets how tall and firm the pillow sleeps.

Three properties decide how a cotton pillow behaves, and they stack in order. The first is staple length, the length of each fiber. Longer fibers hold together better, and fibers under half an inch count as short fiber (Cotton Incorporated). Short fiber is the part most likely to pack down and shed.

The second is form. One fiber can go in as stacked batting, which gives an even, firm surface, or as loose tufts, which give a softer pillow a sleeper can reshape. The third is weight. Cotton does not spring back the way down or polyester does, so more cotton in the same case makes a taller, firmer pillow. One US maker fills its standard with 2 lbs of cotton (Natural Linens).

All three meet in the way cotton settles. Lifekind says cotton fillings compress by about half over time (Lifekind). Good staple slows that loss, batting spreads it evenly, and extra weight leaves room for it. A zipper decides whether new cotton can go back in once it happens.

What is inside an organic cotton pillow, and what forms does it take?

Cotton fiber, most often layered batting. Sellers sell it in four forms: raw ginned fiber, loose stuffing, batting and cut batting pieces.

A true organic cotton pillow is a woven case around cotton fiber, and the fill comes in four forms. Raw fiber has been ginned but not carded. Loose stuffing is fiber opened into tufts and sold by the pound. Batting is fiber combed into webs and stacked, and batting pieces are its offcuts. Finished bed pillows mostly use batting.

The full answer, with a count of what four seller pages say about the fill and a second count of nine pages on settling, is in What is inside an organic cotton pillow, and what forms does the cotton take?. It also explains why a phrase like "organic cotton cover" can be true while the fill inside is PLA or down.

How do batting and loose cotton change over a year of sleep?

Batting starts even and firm and thins into a flat mat. Loose tufts start soft and drift into clumps with thin spots between them.

On the first night, batting feels flat, firm and even across the pillow. Loose tufts feel softer and let a sleeper press a hollow for the head. By night three hundred both have packed down, and one seller of batting pillows says the fill can condense to about half its original volume (Cece's Wool).

The two forms fail differently. Batting loses height evenly, which matters most to side sleepers. Loose tufts gather at the edges and knot, and a sleeper can tease them apart by hand. The night-by-night account, with a count of what five seller pages say about the form of their fill, is in How do batting and shredded cotton fill change between night one and night three hundred?.

Does a GOTS label reach the cotton inside the pillow?

Only when the certificate names the finished pillow. A certificate for the cover fabric says nothing about the fill under it.

A pillow is two parts, a cover and a fill, and a certificate can name either one or the finished pillow. Under GOTS rules, a certificate for a part such as fabric does not make the product certified. Many listings still print GOTS beside the cover alone.

A count of 12 seller pages found that 8 tied GOTS to a single part or material, and only 2 named the finished pillow along with a certifier. The full reading, including what a certifier's name proves and what a scope certificate adds, is in Does a GOTS label on a pillow cover the fill, or only the cover?.

How much cotton goes into each pillow size?

About 2 lbs in a standard, by the makers that print a figure. A queen needs about a sixth more, and a king about two fifths more.

Weight is the quickest clue to how full a cotton pillow is, and most sellers leave it off. Sachi fills its standard with 2 lbs of cotton (Natural Linens), and Cece's Wool puts at least 2 lbs of batting in each pillow (Cece's Wool).

Scaled by face area, a queen needs about a sixth more cotton than a standard and a king about two fifths more. That scaling is arithmetic, since no maker we read prints a king weight. The figures by size, and how to tell whether a stated weight is the fill or the whole pillow, are in How much should a cotton pillow weigh, by size?.

Does a longer cotton fiber make a pillow last longer?

Partly. Longer fibers make a stronger cover and probably hold batting together longer, but almost no pillow listing prints a staple length.

Staple length is graded on every US bale. The USDA tests a sample from every bale and grades its length in thirty-seconds of an inch (USDA AMS). Fibers under half an inch pack down, clump and shed sooner, so longer staple likely keeps a pillow useful longer.

The number almost never reaches the shopper. None of the 9 pillow and batting pages counted for the full guide gave a staple length. How length is measured, how upland and Pima compare, and how to judge fill with no figure printed, are in Does staple length decide how long a cotton pillow stays useful?.

How were eight cotton pillows ranked from their sellers' own pages?

By written tests applied to every pillow, using only what each seller states about certificate, fill, zipper, returns and price.

This site keeps one buying page. It reads the product, returns and certification pages of eight sellers of cotton-filled pillows, and it applies the same written tests to each one. A seller that says nothing on a point gets no credit for it.

Pillows sold as organic cotton that hold another fill inside were left off. Every pillow on the list was bought and handled, and every figure is the seller's own, read on a stated date. The picks, the counts behind them and the rule that chose the eight are in What is the best organic cotton pillow?.

What do cotton pillow listings tend to leave out?

Fill weight, staple length and how far the cotton settles. Counts across the guides here show most seller pages print none of the three.

The guides on this site count what seller pages print, and the same three gaps turn up in each count. Weight is the first. Of 8 cotton pillow pages read for the weight guide, 5 gave no fill weight in their text, and none listed a weight for every size.

Staple length is the second. None of the 9 pillow and batting pages read for the staple guide stated one. Settling is the third. Only 2 of 9 seller pages warn that cotton fill compresses, though Lifekind puts the loss at about half over time (Lifekind).

These counts record what pages say, never how a pillow performs. A gap on a page can mean a seller who knows and does not print it. Each gap still leaves a reader without the number that predicts how the pillow will sleep after a year.

Where does US organic cotton fill come from?

Several sellers name Texas, and two pillow pages name the same Texas growers' cooperative as the source of their cotton.

Texas comes up again and again on organic cotton fill pages. Sachi Organics says its cotton comes from the Texas Organic Cotton Marketing Cooperative (Sachi Organics). Pike's Brand names the same cooperative (Pike's Brand), and the two pages share the same materials text.

Fill sellers say the same. One says its stuffing is grown and processed in Texas (HoneyBeGood). Another says its loose stuffing is grown and milled in the USA (Organic Cotton Plus).

Origin says where the fiber grew and where it was opened or carded. It says nothing about staple or form, so a Texas label and a fill weight answer different questions about the same pillow.

How is a cotton pillow cared for once it is on the bed?

The cover gets washed hot and the cotton stays dry. Lost height comes back partly with fluffing and fully only with new cotton.

Most cotton pillow makers tell owners to keep the fill dry and spot clean it, and to wash the cover instead. A damp cotton core can stay wet past the 24 to 48 hours the EPA gives for drying wet items before mold can grow (EPA). The full answer on washing is in Can you wash a cotton pillow, and what happens if you do?.

Cotton also flattens, and only part of that comes back. Cotton fibers recover only about 70% from bending (PMC), so fluffing restores the height lost to clumping but not the height lost to set fibers. That split is explained in Why do cotton pillows flatten, and how much of it can you reverse?. Both pages sit on the care page.

Which cotton fill questions are answered in full?

Common questions

Is cotton fill the same thing as cotton batting?
No. Batting is one of four forms. The others are raw ginned fiber, loose fluffed stuffing and cut batting pieces. Most finished bed pillows use batting, and refill bags tend to hold loose stuffing.

Does organic cotton feel different from regular cotton in a pillow?
No. Organic describes how the cotton was grown and processed. The fiber feels the same, so weight, height and form decide how the pillow feels.

Why does a cotton pillow feel firmer than a down one?
Cotton fibers pack together under weight and spring back less than down or polyester. Cotton fill sits dense under the head, and more cotton in the same case makes a firmer pillow.

What share of all cotton grown is organic?
A small share. Textile Exchange estimated that 1.4% of all cotton grown in 2020/21 was organic, which is why the label is worth reading for what it covers.

Does cotton fill go flat?
Yes. Sellers that print a figure expect cotton to settle by a third to a half over time. A zipper lets new cotton go back in, which is the lasting fix.

Sources

The cotton spec sheet's outside references, one line apiece, tagged with the section that cites them.

CottonWorks (cottonworks.com), cited under “What is the fiber inside a cotton pillow?”.
USDA AMS (ams.usda.gov), cited under “What is the fiber inside a cotton pillow?”.
ACS ChemMatters (acs.org), cited under “What is the fiber inside a cotton pillow?”.
Organic Trade Association (ota.com), cited under “What makes cotton fill organic, and how much cotton is grown that way?”.
USDA AMS (ams.usda.gov), cited under “What makes cotton fill organic, and how much cotton is grown that way?”.
The Roundup (theroundup.org), cited under “What makes cotton fill organic, and how much cotton is grown that way?”.
Textiles Partnership, citing Textile Exchange (textilbuendnis.com), cited under “What makes cotton fill organic, and how much cotton is grown that way?”.
Cotton Incorporated (cottoninc.com), cited under “How do staple, form and weight fit together in one pillow?”.
Natural Linens (naturallinens.com), cited under “How do staple, form and weight fit together in one pillow?”; “How much cotton goes into each pillow size?”.
Lifekind (lifekind.com), cited under “How do staple, form and weight fit together in one pillow?”; “What do cotton pillow listings tend to leave out?”.
Cece's Wool (ceceswool.com), cited under “How do batting and loose cotton change over a year of sleep?”; “How much cotton goes into each pillow size?”.
USDA AMS (ams.usda.gov), cited under “Does a longer cotton fiber make a pillow last longer?”.
Sachi Organics (sachiorganics.com), cited under “Where does US organic cotton fill come from?”.
Pike's Brand (pikesbrand.com), cited under “Where does US organic cotton fill come from?”.
HoneyBeGood (honeybegood.com), cited under “Where does US organic cotton fill come from?”.
Organic Cotton Plus (organiccottonplus.com), cited under “Where does US organic cotton fill come from?”.
EPA (epa.gov), cited under “How is a cotton pillow cared for once it is on the bed?”.
PMC (pmc.ncbi.nlm.nih.gov), cited under “How is a cotton pillow cared for once it is on the bed?”.