Lace up these tech-loaded running shoes for a stable platform and natural gait that'll help you reach your running goals. FluidFit upper combines stretch mesh and reinforcements for a fit that adapts to your foot for a glove-like fit. Discrete Eyelets are placed to evenly disperse lace tension across the top of the foot for maximum comfort. Heel Clutching System holds the heel firmly in place for a stable fit. Heel and forefoot GEL Cushioning Systems absorb impact. Propulsion Trusstic System mimics connective tissues of the foot to create a natural running stride. Guidance Line utilizes vertical flex grooves to enhance gait efficiency. ASICS High Abrasion Rubber (AHAR) outsole in critical areas of the outsole for durable traction where you need it most. DuraSponge in the forefoot enhances cushioning and durability. Wt. 10.4 oz.