Cushees crew socks are Ethically sourced, Ethically crafted and Environmentally friendly American Made for 40 years of Old School Quality for the Modern day. No perfumes, dies or softeners used in finishing. Ideal for tennis or other high impact sports, or for general use when extra cushion is desired. The socks are knit with Hi-bulk Acrylic yarn and use Hi-splice grey yarn in the foot for extra cushioning. The tops are welted so the top will not unravel and will add to long life for the socks. CONTENT OF THE SOCKS IS 85% HI-SPLICE ACRYLIC & 15% SPANDEX. Sizes: Either Medium style 167 or Large style 166 [Medium: sock size 9-11 = Lady's shoe sizes 6 - 9 or Men's shoe sizes 5-7] [Large: sock size 10-13 = Lady's shoe sizes 10-12 or Men's shoe sizes 9 - 12] XL sock size = Men's shoe sizes 13 - 17 White with Grey bottom