80% cotton/17% polyester/3% spandex PROTECTIVE DESIGN: Five Floors rubber to enhance the anti-skid effect, And prevent the shoes from hurting the foot.that provide maximum comfort for indoor and outdoor activity. Size: Our no show socks fit US women’s shoe sizes 10, US women’s shoe sizes 9-11. are a good match for all your sneakers, boat shoes, loafers, etc. MATERIAL: 80%Cotton+17%Polyester+3%Spandex.Made of breathable material with premium cotton, keeps your feet dry. Moisture management, Cushioned foot, Comfort toe seam. ATTENTION: Easy to wash machine wash or hand wash, do not bleach, iron, bleach. CUSTOMER FIRST: Shop with confidence. Your satisfaction is our topmost priority. If you do not like our socks for any reason, we offer a full refund or free replacement.