Long-lasting cushioning you have to see to believe. Seamless synthetic upper for a comfortable, breathable fit. Lightweight Solyte midsole for durable cushioning. 180-degree GEL Cushioning System absorbs the repeated shock of running. Full-length Trusstic System for energy-returning rebound with every step. AHAR (ASICS High Abrasion Rubber) in critical areas of the outsole for durable traction where you need it most. Wt. 9.4 oz.