The Mizuno Wave Alchemy 11 running shoe is a lightweight option for the moderate-to-severe overpronator. AIR Mesh upper with Dynamotion Fit provides the utmost in breathability and comfort. AP midsole adds lightweight, responsive, yet durable cushioning. SmoothRide engineered, Composite Double-Fan Wave provides the perfect blend of control and cushioning while offering an unsurpassed ride. VS-T shock absorbing cushioning compound in the heel. Mizuno Intercool full-length midsole ventilation system reduces heat and humidity build-up inside the shoe. X10 carbon rubber in the heel allows for longer wear in high impact areas and supplements traction at heel strike. SmoothRide engineered combination solid rubber/blown rubber forefoot outsole design for cushioning, flexibility and durability. Wt. 11.9 oz.