Breathable, no-sew synthetic mesh upper for a comfortable, lightweight fit. ABZORB full-length foam midsole for durable cushioning with every step. Medial post at the midfoot stabilizes your stride and helps correct pronation. Durable Ndurance carbon rubber in the heel and lateral outsole for long-lasting traction and protection. Blown rubber forefoot adds cushioning and response. Wt. 10.7 oz.