Running shoe built for the neutral to underpronator who requires lightweight cushioning. Mesh upper for the maximum breathability with synthetic rand for added support. Visible Air-Sole midsole unit for plush cushioning in the heel. Phylon forefoot for a great toe-off. Abrasion resistant BRS 1000 carbon rubber in high wear areas with articulated segments of Duralon across the forefoot for durability/cushioning and to encourage a neutral toe-off. Segments of solid rubber in a waffle fill configuration for durability and increased traction on different surfaces. Measurements: ; Weight: 14 oz ; Product measurements were taken using size 9, width D - Medium. Please note that measurements may vary by size.