YUFEIDA Men's Jockstrap Thong Panties Open Back Briefs Underpants Underwear Fashion and Sexy Design,Every Cool Man Must Has it Smooth and soft feeling,low waist and transparent style,show your sexy body Material:80% nylon+20% spandex; 100% new and high quality Waist: Medium: 27"-29"; Large:30"-31"; X-Large: 32"-33" Asian size is smaller than US/EU/UK size,so please check my measurements to make sure what is your size before ordering