Importado Socks washing instruction and package: Both hand and machine wash; Low temperature wash and open-air drying With silicone anti-slip heel. Hugs your feet & won’t slip off. Machine Washable, durable. One size fits S/M Shoe size (4-8). Pack of 4 Pairs Combined 30% good cotton with 67% bamboo fiber and 3% spandex. Made from eco-friendly material. Allows your feet to breathe and stay comfortable all day. Soft and comfortable cotton material. Sweat-absorbent even when your feet perspire. Perfect for flats, high heels, dance and choir shoe, sports shoes and canvas shoe, etc. Lightweight fabric, almost invisible and nicely finished seams, real no show and low cut socks. A little pad in heels, cushion on the back to protect your heels, well designed to anti-skip all day. Computer-controlled manufacturing process to ensure that all socks we provide are what you need. All of our low cut socks are durable and fully washable from warm to cool wash.