SILKWORLD Men's Underwear Mesh Low Waist Breathable Brief Pack of 7 90% nylon + 10% spandex Comfortable, Good Elasticity Feature:Low rise,Seamless,Breathable,Mesh Elastic logo waistband sits flatly and securely Machine Wash or Hand Wash for Easy Care, do not Bleach Because of the Asian size is about 1 size smaller than US size.For example: usually the Asian M is equal to the US S, and our item tag is printed in Asian size only.When you receive the item,please feel ok, it is just your size.