WINDAY Men's Sexy Patent-Leather Jock Strap Underwear Bikinis and Briefs Note:Asian size is smaller than US/EU/UK size so please check your measurements to make sure the item fits before ordering. 80% Nylon / 20% Spandex matte coated tricot Asia size S:= Waist 25.5"-29.5" Asia size M:=Waist 30"-34" Asia size L: = Waist 34"-38"