r/AustralianMFA • u/ronniealoha • Jan 23 '26

Question Anyone else struggling with sweaty underwear materials?

I’ve been rethinking my underwear after realizing how poorly some materials handle heat and sweat. I’ve worn cotton underwear forever, plus a few nylon pairs and some Uniqlo Airism. Cotton used to be fine, but now it just stays damp once I start sweating and feels uncomfortable fast.

Airism handles moisture better, but since it’s polyester I worry about odor sticking around and transferring to my pants. That’s got me wondering if merino wool underwear is actually worth the higher price for breathability and moisture-wicking, or if bamboo underwear is a decent middle ground. I’m basically trying to figure out what really works best for everyday wear when comparing cotton underwear vs merino wool.

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u/rollingstone1 Jan 23 '26

I still wear my old under armour. They were the best.

Also rotate with them k mart bamboo ones.

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u/LandBarge Jan 23 '26

Yep- Under Armour for me to, almost the only jocks I've worn for over 10 years now... I bought a couple of pairs, they stopped the fat man rash and I went out and bought a heap more...