The Mizuno Wave Ascend running shoe will raise your trail running workout to new heights. Composite Double Fan-Shaped Wave™ provides a great blend of support and cushioning in a low profile model built to handle the rigors of trail running. The SmoothRide™ engineering approach minimizes the rapid accleration and deceleration of the foot during transition, creating the smoothest ride possible. AIRmesh™ upper provides the utmost in breathability and comfort. AP midsole is made of lightweight, responsive, yet durable cushioning copolymer. X-10™ durable carbon rubber outsole allows for longer wear in high impact areas and supplements traction at heel strike. Bi-directional outsole rubber compound breaks through water, improving grip in all conditions. Wt. 12.0 oz.