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What the Wool Act Requires on a Wool Label
The Wool Products Labeling Act of 1939 decides when a tag may say wool, when it must say recycled wool, and which animal fibers the word legally covers.
By Claire Donovan · Published Oct 9, 2026 · Updated Oct 9, 2026
The short version
The Wool Products Labeling Act of 1939 decides when a tag may say wool, when it must say recycled wool, and which animal fibers the word legally covers.
Every label term in this guide is explained in what the symbols actually mean .
The Wool Products Labeling Act of 1939 opens with a demand short enough to fit on the tag it governs: any product made in whole or in part of wool, sold in US commerce, must carry a label showing how much of it is wool and what the rest is. It is the oldest of the three federal labeling statutes that decide what a clothing tag may say — older than the Textile Act by two decades — and it contains the only legally binding definition of the word “wool” an American shopper will ever read. What the statute says, what it governs, and what it cannot reach are the three things below.
What “wool” legally includes
The Act’s definition reaches further than sheep. Wool, for labeling purposes, means fiber from the fleece of the sheep — and also from the Angora goat (mohair), the Cashmere goat, the camel, alpaca, llama, and vicuna. A camel-hair topcoat is legally a wool product; a cashmere sweater falls under the same statute, which is why cashmere’s grade arguments happen in the market rather than in the law, as covered in cashmere grade and price.
That breadth has a practical consequence: the protections travel with the fiber. Every rule below that applies to a sheep’s-wool sweater applies equally to the mohair throw and the alpaca scarf, and a seller cannot step outside the statute by naming the animal instead of the fiber.
Wool versus recycled wool
The Act’s sharpest line divides new fiber from old. Wool that has never been spun or felted into a product is simply wool. Fiber recovered from knitted, woven, or felted material that has been shredded or unravelled and made into yarn again must be named “recycled wool” on the tag. A label that calls reclaimed fiber plain wool is misbranding, and misbranding is what the enforcement machinery exists for — the FTC can require corrective labeling, and the statute carries seizure and penalty provisions for products that reach commerce mislabeled.
The distinction is honest in both directions. Recycled wool is not a defect: it is a real supply chain with real environmental advantages, and some of the sturdiest blanket cloth ever woven was made from it. The rule asks only that the tag say which kind of fiber you are buying, the same philosophy the Textile Act later extended to every other fiber — percentages, names, and no substitutions, as detailed in what the Textile Act requires on your clothing label.
What the tag must carry
For a wool product, the mandatory tag content is short. It must show the percentage of wool, the percentage of recycled wool, and the percentage of each other fiber present; the company name or its Registered Identification Number; and — under the companion Textile Act rules rather than the Wool Act itself — the country where the product was processed or made. A garment that is entirely new wool still must say so: “100% wool” is a statement the statute requires, not a boast the brand volunteered.
Read the percentages as a pair, not as one number. A tag reading “70% wool, 30% recycled wool” tells you a third of the fiber has already lived one life as cloth, which predicts a coarser hand and shorter staple before you touch the garment. The standard says where the fiber came from; the hand decides whether the yarn suits the use.
What it governs, and what it cannot reach
The Act governs one thing well: truth in fiber content for wool products in US commerce. Three things sit deliberately outside it.
First, quality words. Nothing in the statute defines “superfine,” “premium,” or “extra” — adjectives on a wool tag are unregulated marketing, and the measurable version of softness, micron count, appears on tags only when a brand volunteers it. Second, non-wool textiles: a cotton or polyester garment answers to the Textile Act of 1960, not this one, which is why the two statutes read like companions rather than rivals. Third, durability and care: the Act says what the fiber is and how much of it there is, and is silent on how the garment should be washed or how long it should last — the care symbol system is its own governed vocabulary, as decoded in fabric care label symbols.
The practical read is the usual one: the tag’s legally enforced half is reliable, and its unregulated half is a claim. Buy the percentages, test the adjectives against your own hand, and the 1939 Act has already done the work it was written to do.
Claire Donovan
Spent eight years in womenswear buying before moving to editorial research. Reads care labels for fun and returns nothing without a wear log. How we rate.
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FAQ
- Is recycled wool worse quality than new wool?
- Not necessarily worse, but different. Recycled wool is made by unravelling or shredding existing knitted or woven material, and the cutting shortens the fibers, so recycled yarns are typically spun into coarser, fuzzier, less strong cloth than yarns from new fleece. That suits blankets and heavy knits fine. What the label tells you is provenance, not quality — judge the fabric by hand, as always.
- What does lambswool legally mean?
- Nothing, in law. The Wool Act defines wool and recycled wool and says nothing about lambswool; the trade uses the word for fiber from a lamb's first shearing, which is finer and softer, but no regulation defines the term or polices its use on a tag. Treat lambswool, merino, and similar premium words as claims to check by feel and by the percentages printed alongside them, not as regulated terms.
- Do the wool rules cover blankets and upholstery?
- Blankets, yes — the Act covers clothing and household articles made in whole or part of wool, so blankets, scarves, and throws all require the same content tagging. Where the wool is concealed inside a product, such as stuffing or padding that never shows, the rules take a different form and the FTC's guidance should be checked directly rather than assumed from a garment label.