Encounter Women's Wire Free Push Up Cool Comfort Run Sports Bra Size:XS=(Asian S On tag),Size:S=(Asian M On tag),Size:M=(Asian L On tag) Material:Nylon87%+Polyester3%+Spandex10% Back closure 3/4 cup The size we provide is based on Asian size,for more details please have a check about the size reference in the image for beteter fitness:)