Mizuno Running - Wave Legend 3 (Grey/Purple/Black) - Women's: The Wave Legend provides excellent motion control, a smooth transition, and exceptional cushioning in a lightweight package. 24mm/12mm (heel to forefoot ratio). A Composite Double Fan-Shaped Wave that provides a great blend of motion control and cushioning for the runner that has low-arched, flexible feet. The Double Wave is made of rubber on the lateral side for great cushioning at impact and pebax on the medial side for excellent support. The Composite Wave absorbs shock, prevents overpronation, and cushions the foot during heel strike. Outsole: X-10 in the heel for durability; Solid rubber and blown rubber in the forefoot for durability and flexibility. Shoe weighs 9.5oz.