SILKWORLD Men's Cotton Colorful low rise Thong Pack of 7 100% Cotton 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. Material: 75% Cotton, Note:Please check the Sizing info Before buying! Perfect solution to over-packed suitcases and tricky climates Terry elastic back and functional fly for ease Machine Wash or Hand Wash for Easy Care, do not Bleach