CTM Ultra Carbon 2 is a premium running shoe designed for athletes who demand nothing but the best. A new standard in ultra-distance running for elite athletes, this high-end running shoe combines lightweight UD Foam with a tuned carbon plate for the ultimate in efficiency and energy return. It also features a full-contact rubber traction outsole that delivers best-in-class durability and traction. Whether you are training for a marathon or competing at extreme distances, this is your shoe.