Mesh ventilation, Arch support, Cushioned footbed, Comfort toe seam. Women's shoe size 5-9.5 Sock 1-6 60% polyester, 26% cotton, 12% Repreve polyester, 2% spandex Sock 7-12 55% polyester, 25% cotton, 6% nylon, 12% Repreve polyester, 2% spandex Care Instructions: Machine wash warm with like colours Only non-chlorine bleach when needed Tumble dry low Do not iron