Like their Sneaker Socks it is made from a breathable cotton blend that you can sweat, dance, jump and play in without leaving a mark on your skin like most sock bands do! Made in South Korea Contents: 70 Cotton 28 Polyester 2 Spdx Sizing: One size fits most (US women's size 6-10) Care Instructions: Machine wash cold Tumble dry low Do not iron Do not bleach