These women's DWMXW 3-Pack Distance Walking socks from Thorlos are constructed with cotton material for a great fit. The Distance Walking sock was specifically designed for the extreme walking conditions faced by women walking long distances. It offers maximum protection from the damaging effects of the impact, shear and blistering when training for and walking the event itself. Thorlos Distance Walking socks will probably change your shoe size. Our trademark acrylic yarn is exclusively developed for our socks.