Walkon Women's 4 to 7 Pack Casual Boat Liner No Show Socks, Non Slip Cotton Flat Low Cut Materials: high quality 87% Cotton, 10% Nylon, 3% Spandex l Machine Wash, Hand Wash - Made of Korea | premium Korean cotton, it's super soft, long lasting Very light (Thin socks) , comfortable and actually stay up on your heels. - Socks have large gel lining on the inside heel that prevents any slip. Match perfectly with sneakers, loafers, slip-ons, boat shoes and more! (Skechers, Converse, Toms, Vans, Sperry, etc.) But it will show with ballet shoes or some of flats, so please double-check before adding it to cart. All of our products are comfortable, long-lasting, and easy to match with. Try it now, decide later. If you're not satisfied, we'll send your money right back! Save your valuable time. Fits Women's shoe sizes : S(5-7) M(7-10) L(11-13), Fits Men's shoe sizes : : M(6-8) , L(9-11)