Why you keep waking up exhausted — even when you went to bed on time.
The difference is the fabric. And not all fabrics are equal.
You've probably tried cotton. Maybe something marketed as "moisture-wicking" or "cooling." And you've probably noticed that by 3 a.m., none of it is doing what it promised.
Here's why. Cotton absorbs moisture but holds it against your skin — so you stay damp and cold after a hot flash.
Polyester and synthetic moisture-wicking fabrics behave differently but no better. They pull sweat away from your skin quickly — which sounds promising — but then trap that heat and moisture in the fabric itself, where it sits against your body unless everything else in your sleep system is working perfectly together. Most of the time, it isn't.
Our sleepwear is made from a blend of hemp and organic cotton — and hemp behaves differently from any of those fabrics. It actively pulls moisture away from your skin and releases it into the air, so you dry faster. It absorbs and releases heat as your body temperature changes, so the swing from hot to cold is less severe. It's naturally antibacterial, so it stays fresh longer. And unlike most performance fabrics, it gets softer with every wash — not worse.
No synthetics. No chemicals. No "cooling technology" that stops working after six months. Just natural fibre that works with your body all night long.
Why not bamboo?
We get asked this a lot — and we'd rather be honest than dodge it. Bamboo feels lovely in the shop. Soft, light, cool to the touch. But once your body heats up and starts to sweat, bamboo clings. It holds moisture against your skin rather than releasing it, and it doesn't manage heat the way hemp does.
Many of our customers came to us after trying bamboo and being disappointed. If that's you — this is why it didn't work, and why hemp is different.
Two styles. One fabric. Finally, a good night's sleep.
Simone Cooling Nightgown
Think of the Simone as your little black dress for sleep. Clean, simple lines. No buttons, no zippers, no waistbands to dig in or wake you at 3 a.m. Just a beautifully simple shift dress in hemp-organic cotton that slips on and disappears — the way the best sleepwear should.
Because the fabric manages your heat and moisture all night, you move less. The Simone stays where it should, which means you wake up in it the same way you went to sleep in it. That turns out to matter enormously at 3 a.m.
Designed to live outside the bedroom as much as in it — wear it as a day dress in warm weather, at the cottage, or on a slow weekend morning. Nobody needs to know it's also the reason you finally slept through the night.
Available in black — S/M, L/XL, 2/3XL
Not sure of your size? Check our size guide - it's takes 30 seconds.
Vanessa Cooling Pajamas
Some women are tank-and-shorts women. Always have been. The Vanessa was made for exactly that woman.
A gentle V-neck tank and drawstring shorts that adjust to fit you — not the other way around. No waistbands that dig in, no hemlines that ride up. Just two pieces that move with you through the night and stay exactly where you put them.
Same hemp-organic cotton blend as the Simone. Same moisture-wicking, heat-managing performance all night long. The style is different. The results are the same.
And the Vanessa travels beautifully — takes up almost nothing in a suitcase, arrives unwrinkled, works as easily on a patio on a slow Sunday as it does at midnight. Nobody needs to know which job it was hired for first.
Available in black — S/M, L/XL, 2/3XL
Not sure of your size? Check our size guide - it's takes 30 seconds.
Why trust us
CoolYourSweats wasn't created by the fashion industry. That's exactly the point.
I'm Cathy Rust, founder of CoolYourSweats — and I didn't come from the apparel industry. I came from the green building world, where my work was about understanding how natural materials manage heat and moisture. I looked at how hemp, wool, linen — fibres that absorb and release heat as conditions change, working with the environment rather than against it.
When menopause-related night sweats started wrecking my sleep, I searched for sleepwear that applied the same principles. Nothing existed. So I made it myself — bringing material science to a problem the fashion industry had ignored for too long.
That expertise has since been recognised by People, Tom's Guide, and Real Simple, who have sought me out for answers on fabric, heat, and moisture behaviour — in particular about why certain fabrics work and others don't with night sweats and hot sleeping.
That analysis is what's in every piece of CoolYourSweats sleepwear. Not a fashion solution. A material science one.
Read Cathy's full story →
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Our founder, Cathy, talks to Sid Seixeiro on Breakfast Television about the importance of fabric for a good night's sleep for night sweats sufferers.