iYunyi Men's U Convex Low Waist Bikini Briefs Underwear Underpants 90% nylon ?Mens Sexy Soft Bikini Briefs Sexy Underwear U Convex Men's Underpants Asian size, please move 1 size up when you delect Size, M Waist:27-30''; L Waist:30-32; XL Waist:33-35'' Material: 90% Nylon, 10% Spandex NOTE: Please compare the detail sizes with yours before you buy!!!