I start sweating the moment I put it on. Perfect for dieting. I sweat a lot. It's a short-sleeved shirt. It seems good to wear during training as it increases metabolism. Unisex. - Brand: SHIBORIMAX - Color: Black - Material: Glossy, ultra-sweat-inducing material Special structure that doesn't release heat - Design: Short-sleeved T-shirt - Size: L Thank you for viewing. I opened and wore one, and I wanted to sweat a lot in hot yoga, but I sweat more than I expected, so I don't wear it every time, and I have some left over. If you want two, I'll give you a little discount. Machine washable.