Designed to be worn with flats or high heels. These socks are unique because they have a keyhole cutout at the top of the foot, which allows the wearer to keep their socks hidden while still providing coverage and protection for their feet. They are made of 32% coffee charcoal/48% rayon/18% nylon/2% spandex. The standard size fits calves 16” or smaller at widest point and fits shoe sizes 5-12.