Pump up your adrenaline with the Asics Kayano 21 Men athletic shoe. The open mesh on the upper offers breathable exposure while FluidFit and Personal Heel Fit (PHF) possess stretch mesh and memory foam lining for a snug fit. It has reinforced vamp and the Heel Clutching System that uses an exoskeleton structure covers the heel to provide a comfortable fit. It has ComforDry Sockliner composed of antibacterial material to minimize odor and wick moisture. Strobel Last with the upper is stitched to SpEVA 55 Foam, for greater cushioning. Rearfoot Gel, Forefoot Gel cushioning and Discrete Heel render excellent shock absorption. With FluidRide technology, Guidance Line, Dynamic DuoMax Support System, Guidance Trusstic System and Impact Guidance System, it decreases foot stress and lets you maintain a confident gait. The ASICS High Abrasion Rubber (AHAR) in the heel, Rear Foot Crash Pad, and DuraSponge Outsole in the forefoot lend superiror grip on all surfaces. The Asics Kayano 21 Men athletic shoe imparts amazing performance and comfort.