Icebug Men's Heros Running Shoe 100% Ripstop nylon and synthetic Low seamed, clean upper minimizes trail debris collected, potential trail-fail points Upper has water repellent treatment for dryer feet and less weight pick up TPU midfoot stabilizer secures foot both medial and lateral without making the ride harsh or the forefoot flex stiff Squish heel strike unit for durable shock absorbency Toebox and heel cup have protective trim to defend upper and toes