Bridgedale X HaleColor Shown:Silver / SapphireTested in adventure races in New Zealand and other endurance contests, the Bridgedale X-Hale sock is specifically designed to minimize friction around key abrasion areas while pulling moisture away from your foot. It's one of the most advanced racing socks ever developed, especially for warm and hot climate conditions. Bridgedale used a smart combination of merino wool and Isolfil fibers to reduce heat retention and enhance moisture transfer. This venting fabric extends along the top of the foot and even out along the toes. The low-cut styling works exceptionally well with hot weather running shoes equipped with mesh vent panels. Features:40% nylon, 29% merino wool, 29% Isofil, 2% Lycra Lycra knit along arch and ankle areas minimizes friction MMS helps keep feet dry on long runs and in humid conditions ShockZone padding along high impact regions Ventilating mesh along top of foot for improved vapor transfer