Our Test Results
Most bedding is sold on adjectives. Soft, breathable, cool, clean — words chosen to impress, rarely measured, almost never verified by anyone but the brand using them.
We take a different view. A claim worth making is a claim worth testing, by a laboratory with no stake in the result. What follows is the independent testing behind Breeze — the methods, the numbers, and, just as important, what each number does and does not mean.
A fiber measured in a controlled chamber is not the same as a finished sheet on a warm night, and we say so where it matters. The point of testing is not to produce impressive figures. It is to tell the truth about what a material can do.
Cool to the touch
Qmax of 0.405 W/cm² — Intertek, FTTS-FA-019.
Qmax measures the initial transfer of heat from skin to fabric — the sensation of coolness in the first moment of contact. A higher figure means heat moves away from the skin faster at first touch.
Breeze measured 0.405 W/cm² in testing by Intertek under the FTTS-FA-019 method. It is a real, measured property of the fabric, and it corresponds to the cool-to-the-touch sensation people describe when they first lie down.
We would add one honest caveat, because it matters: this is a measure of initial contact, not of how a sheet performs across a full night. Cool-to-the-touch is a genuine and pleasant property. It is not the whole of temperature management, and we would not ask a single figure to stand for more than it measures.
Moisture management
9.23% equilibrium moisture regain for lyocell, versus 5.54% for cotton — roughly 67% higher.
Over a night, the more consequential question is not how a fabric feels in the first second, but how it handles moisture — the humidity your body releases as you sleep. A fiber that takes up and releases moisture readily keeps the surface against your skin drier, and a drier surface feels cooler and more comfortable for longer.
In a peer-reviewed study (Okubayashi, Bechtold, Griesser, "A kinetic study of moisture sorption and desorption on lyocell fibers", Carbohydrate Polymers Volume 58 Issue 3) conducting fiber testing at 20°C and 60% relative humidity, lyocell measured 9.23% equilibrium moisture regain against 5.54% for cotton — approximately 67% higher.
Durability
Comfort that does not last is not comfort but a brief acquaintance. We asked Hohenstein, using established ASTM methods, to measure how Breeze holds up to use.
▪️ First thread breakage at 18,000 abrasion rubs (ASTM D4966-22). A measure of resistance to the friction of ordinary use over time.
▪️Pilling-resistance rating of 4.0–5.0 after 60 minutes (ASTM D3512), on a scale where 5 is best — measuring the tendency of a fabric to form the small surface bobbles that make sheets look worn.
▪️Tear strength of 10.4 lbf warp and 6.4 lbf weft (ASTM D1424). The force the fabric withstands before tearing, measured in both directions of the weave.
These are not the most exciting numbers in the document. They are, over years, among the most important — the difference between a sheet you keep and one you replace.
Tested as a finished product
The tests above measure performance. This one measures safety — and it is worth understanding what it certifies, because the words on most bedding do not.
OEKO-TEX STANDARD 100 tests the finished textile — the thing that actually touches your skin — for a long list of substances known to be harmful. Product Class I is the strictest tier, the standard applied to textiles made for babies and children up to the age of three.
We hold Breeze to it not because a sheet is an infant garment, but because it is the most rigorous bar available, and we would rather clear it than explain why we didn't.
STANDARD 100 Class 1
TEX®
The strictest tier in textiles
TEX®
The strictest tier in textiles
Tested for 1,000+ harmful substances, this label sets the benchmark for safety, from yarn to finished product. Designed for textiles used by babies and toddlers.
A closing note on numbers
We have published these because we believe testing should be shown, not summarised into an adjective. But we would ask you to read the numbers as we have tried to present them — precisely. A cool touch is a cool touch, not a claim about the whole night. A fiber's affinity for moisture is exactly that, and not a temperature. The strictest safety standard is a real bar cleared, not a promise that a certification can't make.
That precision is the point. Anyone can call a sheet cool and clean. Fewer are willing to show you the test, the method, and the honest limit of what each one proves.