The Castelli Free Kit 13 Socks epitomize clean, race-ready style with double-century conquering comfort. Made from durable, quick-drying Meryl Skinlife yarn, these socks whoosh away moisture and fight off stink-producing bacteria to keep your feet dry and fresh-feeling on even the hottest of days. An arch support band circles the midfoot to provide a touch of support, and sock-wide medium compression provides a supportive fit without any bunching or pinching. The Free Kit's 13cm cuff also sits at the perfect height just under the calf to show off that classic Castelli scorpion.