The Mizuno Wave Inspire 7 running shoe was developed for the runner who desires the best blend of support and cushioning that respects the needs of medium-arched, flexible foot types. Highly ventilated AIR Mesh upper provides breathability and comfort. Dynamotion Fit creates an area of give in the heel collar/cradle. Gender Engineering creates running shoes that more closely fit the different running styles of the male and female runner, in return maximizing performance. AP lightweight, high rebound midsole gives greater momentum at take-off. Mizuno Intercool full-length ventilation system. SmoothRide engineered Composite Double-Fan Wave adds a great blend of support and cushioning in a package that transitions like no other. VS-1 in the heel to help prevent overpronation. X-10 in heel adds durability. Solid rubber and blown rubber in forefoot offer durability and flexibility. Wt. 8.9 oz.