The Mizuno Wave Rider 12 running shoe was created for the runner who has a neutral gait cycle and wants a blend of cushioning and support. AIRmesh™ upper provides the utmost in breathability and comfort of the upper. AP midsole offers lightweight, responsive yet durable cushioning. Intercool™ full-length midsole ventilation system reduces heat and humidity build up inside the shoe. VS-1™ shock absorbing cushioning compound in the heel. SmoothRide™ Engineered Composite Parallel Wave™ for superior shock absorption and dispersion with a great transition to boot. X-10™ durable carbon rubber heel allows for longer wear in high impact areas and supplements traction at heel strike. Solid rubber forefoot outsole design adds durability and flexibility. Wt. 11.3 oz.