The Mizuno Wave Shadow is back with a second edition, the Wave Shadow 2. This new edition features an enhanced mesh around the forefoot as well as redesigned overlays for ultimate comfort. Neutral runners will love the same U4icX cushioning in the heel and the cloudwave technology that helps to provide a smooth, lively running experience. Upper: Updated forefoot mesh and redesigned overlays for a more comfortable fit. Flat laces reduce irritation. Midsole: Cloudwave midfoot technology for cushioned comfort and response, while being extremely lightweight. U4icX strobel lining for added cushioning. Outsole: X10 solid rubber outsole at the heel and midfoot for durability and forefoot zig zag pattern for snappy toe off.