Experience the ultimate trail running experience with the updated X-ULTRA 4 GTX! It is equipped with a new frame, for even better protection of sensitive joints without compromising freedom of movement. It features Gore-Tex technology for optimal waterproofing, as well as SensiFit™ technology that hugs the foot from the midsole to the lacing system, providing a secure, comfortable, and almost customized fit throughout the foot. Additionally, it has a protective piece made of rubber, leather, and synthetic material over the toe area.