99extra Underwear, 8 Colors Sale Men's Modal Sexy Skinny Briefs 95% modal/ 5% spandex Please follow our waist size to choose your breifs. If your buttocks is very stong, please choose one bigger size Modal is good meterial, light, smooth, breathable than cotton. It similar to cotton will not stimulate the skin. It is not easy to pilling than cotton The front pouch is just right, provide enough support and elasticity, show your best sexy image and will not feel too tight. You maybe feel tight on first dressing, but it will changed on next 2 or 3 days Doctor advised, a underwear don't use more than 6 months, it will become very dirty although you repeated wash it