XUBA Mens Low Rise Sexy Underwear Trunk Boxer Brief Blue XB03 95%Cotton, 5%Polyurethane hand wash ONLY,slightly,cold water The size for all underwear products are asian size. Please pay a attention before you make order. If you shopping the underwear from U.S.A or EU brands,should be choice one size up. S: 25-27in/64-69cm M: 28-30in/71-76cm L: 31-33in/79-84cm XL: 34-36in/86-91cm