What Thread Count Measures, and Why We Cannot Give You a Number

"What's the thread count?" is usually the first question we are asked in English, and we do not have a number for you. Not because we are keeping it back. The number describes a kind of cloth, and ours is not that kind. Here is what it actually counts, and what to look at instead.

What the number counts

Thread count is the number of threads in one square inch of woven cloth — the lengthwise threads and the crosswise threads added together. A related figure you will see on Asian labels, written like 133×72, splits the same idea into its two directions.

Behind it sits a second number, the yarn count: how fine the individual thread is. Finer yarn lets you pack more threads into the same inch, which is why the two figures move together and why a 60s cotton feels smoother than a 40s one.

For woven cotton, this is a fair shorthand. How a cotton sheet feels really is mostly a matter of how fine the yarn is and how tightly it is packed. Buying cotton by thread count is not superstition — it is a sensible habit, and we would not talk anyone out of it.

Why it does not transfer to a cooling sheet

Heat-releasing fabric is almost always knitted, not woven. Ours is: polyamide with a little spandex, made as interlocking loops rather than as threads crossing at right angles.

There is no grid to count. No lengthwise thread, no crosswise thread, nothing to add up per inch. Asking a knit for its thread count is like asking a jumper for its thread count — the question does not fit the object.

And the things that do decide how the fabric behaves are not measured by it:

The fibre itself. How quickly polyamide carries heat off your skin has nothing to do with how fine the yarn is.
The loop structure. How the loops are formed decides the stretch, the drape and how the surface sits against you.
The proportion of spandex. This is what holds the sheet on the mattress and decides whether it still grips after fifty washes.

So if you ever see a thread count printed on a knitted cooling sheet, it was not measured. It was chosen. Some sellers here do print one. We would rather say we do not have the number than hand you one we made up.

Three things worth more than a thread count

What to ask for	What it tells you
GSM — grams per square metre	The honest weight figure for a knit. Higher usually means more substantial and longer-wearing, with better drape — and slower to dry, which matters more here than it would at home.
The back of your hand	More sensitive than your palm. Hold it flat on the fabric for half a minute, then move to a patch you have not touched. A clear difference means heat is still being carried away.
The test report, line by line	What is written on it was tested. What is not written on it was not. That distinction is the whole value of the document.

Do the hand test on bedding you already own and compare. It takes a minute, costs nothing, and is more honest than any product description — including ours.

What our report says, and what it does not

Our fabric was tested at Quatest 3. The certificate records the fibre composition — 86.6% polyamide, 13.4% spandex — and states that the sample submitted showed no formaldehyde and no aromatic amines from azo dye breakdown, meeting QCVN 01:2017/BCT, the Vietnamese standard for textiles worn against the skin.

It does not cover durability, pilling, dust-mite resistance, or any cooling figure. We will not claim those, because nobody measured them.

The industry number for cooling is Q-max, measured on the finished cloth rather than looked up for the fibre. We have asked our supplier for it and have not been given one. Until we are, there is no figure here — and a made-up Q-max would be the same sin as a made-up thread count.

The ceiling on what any fabric can do

A heat-releasing fabric moves warmth away from your skin faster. It does not make cold. It cannot take you below the temperature of the room, and a sheet advertised as "three degrees cooler" is making a claim cloth cannot keep.

Two more things we would rather you heard from us. The effect is strongest in the first half-minute after you lie down, and fades as your body warms the cloth. And after two or three weeks you stop noticing it as sharply — the fabric has not changed, your sense of it has settled.

It works better with air conditioning on, for a plain reason: the heat has to go somewhere, and air cooler than your body is somewhere for it to go.

If you want to check for yourself

Ten seconds with the back of your hand tells you more than any number on a label. If you are in Ho Chi Minh City you are welcome to come and do exactly that — 169/36 Lương Định Của (An Khánh, Thủ Đức), Monday to Saturday, 10:30–17:30. Bring a piece of your own bedding to compare against if you like; that is the comparison that actually decides it.

If you would rather look first: the Ice Spandex sheets and blankets ›. And the honest comparison between fabrics, weak points included, is on our fabric guide.