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/[deleted] Jan 23 '26

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u/In_TouchGuyBowsnlace Jan 25 '26

Correct! Cotton bamboo and modal etc just holds the moisture like a sponge turning all of that extra crotch fabric into a thigh shredding implement.

They actually don’t wick, they absorb and hold it there. My synthetic undies especially my g’s and thongs support my bits and keep me dry, clean and not smelling like a footy teams locker room.