Fabric: Performance mesh Rubber sole Perforated panels, Reflective accents throughout, Cushioned collar and super-soft insole, Engineered for the needs of multi-functional athletes and movement-based workouts, Ultra lightweight design, Helion superfoam injected CloudTec sole Signature speed-lacing system Round toe Description Engineered to crush any movement-based workout, these On sneakers enhance the label's original Cloud sneaker with cutting edge technologies for a pair that punches well above its weight. Ultra lightweight and featuring HelionTM superfoam injections, the Cloud X is a trainer that never backs down from a challenge, and is at home on the track, street, or gym.