Mizuno Wave Sky Waveknit 3 Women's Running Shoes Glacier Grey/White : Helping runners reach new heights in the training, the Mizuno Sky Waveknit 3 is a brand new style with impressive performance elements. XPOP PU foam and the Mizuno Foam Wave provides a plush feel on the run. The WAVEKNIT upper construction offers an adaptive fit that allows more natural foot movement. For Runners Who... Have a primarily neutral foot type and gait cycle. For runners who like a flexible and adaptive style with responsive cushioning. What's New? XPOP PU foam and Mizuno Foam Wave technology for plush cushioning. Upper: Features a WAVEKNIT upper construction for a comfortable fit and natural movement. Midsole: Cloudwave technology coupled with a full-length U4ic midsole for cushioned comfort and response. U4icX Strobel lining and podular U4icX midsole for added cushioning. New XPOP PU foam and Mizuno Foam Wave delivers an all-new plush experience. Outsole: X10 solid rubber outsole at the heel and midfoot for durability and forefoot zig-zag pattern for snappy toe off.