90% Cotton 7% Polyester 3% Elasthane3 Pack of Black, Loose Fit Top Physician Approved Therapeutic Diabetic Slipper SocksRecommended For Circulatory Problems, Diabetes, Edema, Neuropathy.Made to last, Machine wash warm with like colors, tumble dry low, do not iron.Physicians choice of affordable medical socks that give your legs the blood circulation & quality you crave for!They come in size Ladies 9-11 (fits Ladies Shoe Size 6-10)