FluidFit knit upper adapts to the shape of your foot for a snug fit that stretches and moves with you as you run. Solyte midsole for durable, lightweight cushioning that returns energy with every step. 360-degree GEL® Cushioning System absorbs the repeated shock of running, cushioning the blow and delivering a smooth, comfortable stride. ASICS High Abrasion Rubber in critical areas of the outsole for durable traction where you need it most. Wt. 13.0 oz.