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Updated August 2026: priced four specific queen sets and checked every label claim against the FTC’s textile labelling rules; none of the four publishes a fabric weight.
Thread count has no legal definition in the United States. The FTC’s textile labelling rules require a sheet package to carry three things, and thread count is not one of them. On the five-axis tally below, the L.L.Bean 280-Thread-Count Pima Cotton Percale set finishes first at 56.0 out of 100, ahead of the Brooklinen Luxe Sateen at 46.1, the Cariloha Classic Bamboo Bed Sheet Set at 42.3 and the Mellanni Iconic microfiber set at 42.0.
Nothing here clears 60. That is the result, not a rounding problem.
Every price below is a queen set, checked on 31 August 2026 on each brand’s own store.
Prices are approximate, current as of publication, and change frequently — confirm the latest price with the retailer before buying.
Which fabric fits which sleeper?
- Best overall: L.L.Bean 280-Thread-Count Pima Cotton Percale, $200. It publishes fibre content, thread count and country of origin, and 280 is close to the count Consumer Reports found on its top-performing percale.
- Best on price: Mellanni Iconic microfiber, $35.27. It is a fifth of the price of everything else here and it tells you almost nothing about itself.
- Best if you want the sheen: Brooklinen Luxe Sateen, $209. Brooklinen publishes a 480 count and long-staple cotton, and no weight.
- Skip unless the fibre matters to you: Cariloha Classic Bamboo, $199. Cariloha labels it correctly as viscose from bamboo. The cooling claim attached to it has no published basis I could find.
Is thread count something a sheet label has to carry?
Start with the law, because it settles more of this than any review does. Bedding is covered by the Textile Fiber Products Identification Act, and the FTC’s own guidance lists sheets by name. The label has to give you fibre content by generic name and percentage by weight in descending order, country of origin, and the identity of the manufacturer, importer or dealer. Three things.
Thread count is not on that list. Neither is fabric weight. Both of the numbers a sheet shopper is actually trying to compare are optional, and the one that is printed everywhere is the one with no standard behind it.
Here is each claim, set against what stands behind it.
| The claim on the package | What stands behind it | Verdict |
|---|---|---|
| “280 thread count”, “480 thread count” | No mandatory US definition. ASTM D3775 and ISO 7211-2:2024 are voluntary test methods, not labelling rules, and neither is what gets printed on a package. Consumer Reports reports no correlation between manufacturers’ thread-count claims and how sheets actually performed in its testing. | Unregulated number |
| “100% viscose from bamboo” (Cariloha) | Correct under the FTC’s rule. The FTC says that unless a product is made directly with bamboo fibre it cannot be called bamboo, and must use the generic name — rayon, or rayon made from bamboo. | Compliant, and unusually so |
| “3 degrees cooler than other non-bamboo fabrics” (Cariloha) | No published test, standard or third-party measurement that I could locate. Cariloha names no basis on the product page. | Unsupported as published |
| “Double-Brushed Microfiber” (Mellanni) | AATCC states the industry threshold as under 1 denier and over 0.3 denier, and cites no standard number for it. There is no US legal definition of microfiber. Mellanni’s own page gives no fibre percentage, no denier, no thread count and no weight. | Word, not a specification |
| Fabric weight in GSM | Not published by L.L.Bean, Brooklinen, Cariloha or Mellanni for the sets here. | Absent from all four |

Can a viscose sheet legally be sold as bamboo?
No, and the FTC has collected money over it. In April 2022 the agency announced civil penalties of $2.5 million against Kohl’s and $3 million against Walmart, $5.5 million between them, for marketing rayon textiles as bamboo and attaching eco-friendly claims to them. The FTC’s own description is blunt: converting bamboo into rayon “requires the use of toxic chemicals and results in hazardous pollutants.”
That was not the first round either. In January 2013 four retailers paid $1.26 million between them on the same point: Sears $475,000, Amazon $455,000, Macy’s $250,000 and Leon Max $80,000.
The part worth knowing is how the FTC got to a penalty at all. Its authority rested on warning letters it had already sent to 78 retailers over a decade earlier, in 2010. Small inconsistency, since we are being careful about sources: the FTC’s own press release dates those letters to 3 February 2010 and its 2022 blog post about the same letters says January 2010.
Credit where it is owed. Cariloha’s product page says “100% viscose from bamboo”, which is what the rule asks for. If a set on a shelf near you says only “bamboo”, the label is the problem, not the fabric.
Why can Brooklinen print a GSM for linen but not for percale?
This is the finding that surprised me most. The usual line is that the industry does not print a fabric weight for sheets. That is not quite what is happening.
Brooklinen publishes 155 GSM for its Washed European Linen set, on its own site, on a page built exactly like the ones for percale and sateen. It also references a weight for its flannel and its heathered cashmere. On the Classic Percale and Luxe Sateen pages it publishes a thread count and a fibre and stops there.
So the number exists inside the company. It is printed where it flatters the fabric and left off where it would let you line two cotton sets up against each other. L.L.Bean, Cariloha and Mellanni do not publish a weight either, which makes the omission look like a category habit rather than one brand’s decision.
Mellanni goes furthest. Its current product page has quietly dropped the “1800” that made the line famous, and now says “Double-Brushed Microfiber” and nothing else. No fibre percentage. No denier. No count. Its own FAQ adds none of them back.
How do the four fabrics score on label, evidence and price?
Five axes, weighted for a purchase you make roughly once a decade and then launder for years. Label transparency carries the most weight at 30 percent, because on this product it is the only thing standing between you and a marketing adjective. Independent evidence gets 20 percent. Price gets 20 percent and is scored as a plain ratio: the cheapest set here is 100, and every other set scores the cheapest price divided by its own. Laundering and shedding get 15 percent. The temperature claim gets 15 percent, and no one wins it.
| Axis (weight) | L.L.Bean Percale $200 | Brooklinen Luxe Sateen $209 | Cariloha Bamboo $199 | Mellanni Microfiber $35.27 |
|---|---|---|---|---|
| Label transparency (30%) | 70 — fibre, 280 count, origin; no weight | 60 — fibre, 480 count; no weight, though the brand prints one for linen | 55 — correct fibre name; count only in prose; no weight | 20 — no fibre percentage, no count, no denier, no weight |
| Independent evidence (20%) | 75 — CR’s top percale was a 280 count | 45 — CR’s 550-count sateen failed to fit a 10-inch mattress after a year of washes | 40 — no measurement located for the cooling claim | 35 — the only measured figure is a shedding figure |
| Price, cheapest = 100 (20%) | 17.6 | 16.9 | 17.7 | 100 |
| Laundering and shedding (15%) | 80 | 75 | 70 | 30 |
| Published basis for the temperature claim (15%) | 30 | 30 | 25 — a number with no stated basis | 30 |
| Weighted total | 56.0 | 46.1 | 42.3 | 42.0 |
Disagree with a weight and re-run it. Drop label transparency to 10 percent and push price to 40, and the Mellanni set wins outright. That is a legitimate way to shop. It just means you have decided you do not care what the fabric is.
Is a 280-thread-count percale worth $200?
Percale is a one-over-one weave, and L.L.Bean’s version publishes the three things a label should: 100 percent long-staple pima cotton, 280 thread count, imported. That is the fullest disclosure in this group.
Consumer Reports is the reason it scores well on evidence rather than on feel. CR washes fitted sheets 25 times, which it describes as about a year of laundering at fortnightly intervals, and tests fit, softness, wrinkling, strength and shrinkage. Its finding is that there is no correlation between manufacturers’ claims about materials or thread count and how the sheets performed. Its top-rated percale carried a 350 count and beat a 550-count set that no longer fitted a 10-inch mattress after a year of washes.
So 280 is not a low number. It is a normal number that stops being useful above a certain point, and paying for a bigger one buys a bigger number.
Skip this if you iron nothing and hate the look of a wrinkled bed, or if $200 for sheets is not a trade you want to make when a $35 set exists.
What does a 480-thread-count sateen buy you?
A surface. Sateen floats more threads on the face of the fabric, which is where the sheen and the glide come from, and Brooklinen prices its Luxe set at $209 for a queen in solids.
It scores lowest of the three cotton options on independent evidence for a specific reason. The set Consumer Reports singled out for failing to fit after a year of washing was a 550-count sateen. That is not the Brooklinen set, and I am not saying it behaves the same way. It does mean the higher count on a sateen face has an argument to answer, and a fabric weight would help answer it.
Brooklinen has the weight. It prints 155 GSM on the linen page.
Skip this if you sleep hot, or if you want to compare two cotton sets on anything more solid than which number is larger.
Does Cariloha’s viscose actually sleep three degrees cooler?
Cariloha publishes the claim on its own product page: its bamboo sheets are “3 degrees cooler than other non-bamboo fabrics”. Three degrees of what, measured how, against which fabric, is not stated. I could not find a test, a standard or a third party behind it.
Which is a shame, because Cariloha is the one brand here that gets its fibre labelling right. The set is sold as 100 percent viscose from bamboo at $199 for a queen. The formal spec list gives no thread count at all; a 250 count appears only in the marketing copy, next to a comparison against 1,000-thread-count Egyptian cotton.

A count in the prose and not in the specs is worth noticing. Specs get compared. Prose gets skimmed.
Skip this if you want a wash-and-forget set you can run hot without thinking, or if you were buying it for a temperature figure that has no test behind it.
How much does a polyester sheet shed in the wash?
There is a measured answer, and it is worth stating carefully. In a 2021 study in PLOS ONE, Vassilenko and colleagues laundered consumer textiles and weighed what came off. Mechanically-treated polyester released 161 ± 173 mg per kilogram of textile per wash. Nylon released 27 ± 14 mg on the same basis, about a sixth as much.
Read the error term before you use that number. The standard deviation on the polyester figure is larger than the mean, which means the spread between one polyester fabric and another is wider than the gap between polyester and nylon. The study measured apparel, not sheets. No shedding figure has been published for the Mellanni set specifically, and the honest position is that a polyester sheet sheds, at a rate that has not been measured for this product.
The rest of the case for the Mellanni set is the price. $35.27 on sale from $46.97, against $199 to $209 for everything else here. Nothing in this comparison changes that.
Skip this if you sleep hot, or if you want to know what you are buying. Mellanni publishes less about its own product than any other brand on this page.
Bamboo or microfiber for third place?
42.3 against 42.0 is a tie. Three tenths of a point on a hand-weighted tally is noise, and pretending otherwise would be dishonest about how the tally was built.
I would spend my own $199 on the Cariloha. Not because of the cooling claim, which I would ignore. Because the label tells me what the fibre is, in the words the FTC requires, and the Mellanni set tells me nothing I could check.
If your $35 is doing a different job — a guest bed, a child’s bunk, a set you expect to replace — buy the Mellanni and do not feel clever about it either way.
Where does that leave a $35 set against a $200 one?
It leaves the L.L.Bean percale in front, on the strength of the label and Consumer Reports’ finding that 280 is enough. The Brooklinen Luxe Sateen is the loser here, and not because it is a bad sheet: it is the one set whose maker demonstrably has a fabric weight and prints it on a different page.
Two things to do before you buy anything. Read the fibre content line rather than the front of the box, because that line is the part the law governs. And treat the thread count as decoration.
Other things that turn out to be relevant: certifications are narrower than they look. OEKO-TEX STANDARD 100 certifies that an item has been tested against a list of over 1,000 harmful substances. It is a chemical safety test. It says nothing about organic content, durability or how the sheet sleeps. GOTS is the organic one, and it has two grades: the “Organic” label needs at least 95 percent certified organic fibre, “Made with Organic materials” needs at least 70 percent.
One more, for completeness: no CPSC recall of bed sheets surfaced in searches covering 2023 to 2026. Mattresses and mattress pads get recalled constantly under the federal flammability rule. Sheets, which sit against you all night, are not covered by a mandatory performance standard at all.
Sources named above, in order of how much work they did here: the FTC’s textile labelling guidance, its bamboo business guidance, the April 2022 Kohl’s and Walmart penalties, Consumer Reports on sheet testing, and the PLOS ONE laundry shedding study. Every price came from the brand’s own store on 31 August 2026.
If the pillow under these sheets is the part that is wrong, we ranked foam, water and buckwheat cervical pillows on a similar tally, and the mattress-in-a-box comparison covers the layer under that. More in Home & Living.































