Powersox Men's 2pk Medium Cushion Ankle Length Medium 5 to 8 1/2-Black Marble 66% wool/32%nylon/2%spandex Keep your feet comfortable and warm in the winter with these boot socks PowerSox stands up for the feet you stand on everyday with Reinforced toe and heel; arch support Four elements of support: Strategic cushioning, moisture management, arch brace, and stretch fit Size: Mens Medium 5 to 8 1/2 Pack of 2