WINDAY Men's Sexy Patent-Leather Jock Strap Underwear Boxer 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. 83% Nylon / 17% Spandex matte coated tricot Asia size M:= US S--Waist 25.6"-29.5" ; Asia size L: = US M--Waist 30"-34" ; Asia size XL: = US L--Waist 33"-38" ;