If you're waking at 2 or 3am hot, damp and throwing the doona off, you've probably already Googled your way through cooling sheets, fans and bedroom thermostats. The piece most people fix last — and the one touching your skin all night — is what you're actually wearing.
Night sweats ruin sleep twice
The first wake-up is the heat itself. The second is subtler: once you've sweated into a fabric that holds moisture, you're lying in a damp layer that turns cold against your skin. Now you're clammy and chilled, and your body has to climb back to a sleepable temperature before you can drift off again. One hot flush can cost ten minutes or an hour — and the fabric largely decides which.
The four things that actually matter

1. Moisture release, not just absorption. Cotton absorbs sweat well — that's not the problem. The problem is it dries slowly, holding dampness against you for hours. Look for fibres that absorb and release moisture quickly. This is where TENCEL™ Modal outperforms: it takes up moisture more readily than cotton and dries noticeably faster.
2. Breathability. During a flush, your body is trying to dump heat. Polyester and synthetic 'silky' fabrics trap it. Plant-based fibres — modal, quality cotton, linen — let it escape.
3. Drape. Damp fabric that clings to skin is half the misery. A smooth, fluid drape keeps the fabric moving off your body rather than sticking to it.
4. Cut. Counterintuitively, short sleeves and shorts usually beat winter-weight pyjamas even in a Queensland or Melbourne winter — the heat surge happens under the doona, not in the room. Better to wear a breathable short set and control warmth with bedding layers you can shed in seconds.
Fabric by fabric
TENCEL™ Modal — the strongest all-rounder for night sweats: high moisture uptake, fast release, breathable and cool to the touch. Cotton — fine for cool, dry sleepers; works against you once you sweat. Bamboo viscose — soft and cooling, but quality varies enormously between makers and it tends to pill and lose shape sooner. Polyester satin — looks the part, sleeps hot; avoid. For the full breakdown, see our TENCEL™ vs cotton vs bamboo comparison.
If night sweats are hormonal
Night sweats are extremely common through perimenopause and menopause. Sleepwear can't change your hormones — anyone claiming otherwise is selling you something — but it directly changes the aftermath of each flush: how much heat gets trapped, and how long you lie in damp fabric afterwards. We've written more about this on our night sweats and menopause sleepwear page. If sweats are new, severe or come with other symptoms, that's a conversation for your GP.
Our answer

The VELIN Lumen Pyjama Set was designed around exactly this problem: OEKO-TEX® certified TENCEL™ Modal in a relaxed short cut, made in Australia for hot sleepers. It comes with a 30-Night Sleep Trial — because the only review that matters is how you feel at 6am.
This article is general information, not medical advice.