Combed, Ring-Spun, Airlume: What the Label Actually Means
Most cotton labels say one thing: 100% cotton. It's true, and it tells you almost nothing. Two shirts can both be 100% cotton and feel like different materials.
The difference isn't the plant. It's what happens to the fiber before it becomes thread.
Spinning: how the thread is made
Cotton arrives as a mass of loose fibers of different lengths. To make thread, those fibers have to be twisted together.
Open-end spinning is the fast way. Fibers are fed in and bound with a wrapper fiber. It's cheap and it works, and it leaves a yarn with more surface fuzz and a rougher hand.
Ring-spinning twists the fibers around each other continuously as the thread is drawn. It takes longer and costs more. The result is a longer, straighter, stronger yarn with the fiber ends tucked in rather than standing out.
That's the first fork in the road, and you can feel it with your hand.
Combing: what gets taken out
Before spinning, the fiber can be combed. Fine metal combs pull the mass apart and remove everything below a threshold — in practice, fibers shorter than about 12.5 mm.
That's not a trim. The removed portion, called noil, is 10 to 25% of the input. A quarter of the cotton can leave before spinning begins, and it's the short, weak quarter.
What's left behind is measurable. Against carded yarn — the same cotton, uncombed — combed yarn shows:
| Combed vs. carded | |
|---|---|
| Breaking strength | +11.59% |
| Hairiness | down to −26.83% |
| Neps (fiber knots) | down to −50% |
| Mass irregularity | down to −50% |
| Yarn cost | about +5% |
Fewer neps and lower hairiness mean a flatter, more even surface. Higher breaking strength means the yarn takes more stress before it gives.
The cost line matters too. Combing throws away up to a quarter of the raw material and adds a step, so the yarn costs more. That's the whole trade: you pay for what was removed.
Why a flat surface matters here
For a plain shirt, this is a comfort question. For a printed one, it's also a picture question.
Our designs are printed directly into the fabric with water-based ink. The ink sits in the fiber, not in a layer on top of it. That means the surface underneath is the surface you see — every stray fiber standing up off the weave is a place where a fine line can break up.
A flatter yarn holds an edge. That's the practical reason we care about hairiness numbers on a t-shirt.
So what is Airlume?
Airlume is a mill's name for its combed and ring-spun cotton. It's a brand name, not an independent standard, and there's no published test that separates it from other combed ring-spun cotton.
We say it because it's what we use and it's accurate. We don't build a claim on it. The numbers above belong to combing and ring-spinning as processes — they're published textile engineering, not a marketing figure — and that's the honest place to put them.
Our shirts are 100% Airlume combed and ring-spun cotton in solid black and solid white, spun to 32 singles, in a 4.2 oz light jersey.
The short version
A quarter of the cotton is removed before the thread exists. The thread is twisted the slow way. The yarn costs about 5% more and breaks about 12% later.
None of that shows up in a photograph. It shows up in your hand, and in the edge of a printed line.
