The legend carries on with the latest iteration of the ASICS GEL-Kayano 21! ; Successor to the GEL-Kayano 20. Built for the mild to moderate overpronator. FluidFit upper technology combines multi-directional stretch mesh with stretch reinforcements that adapt to the athlete's foot. Breathable, open mesh upper with durable and supportive synthetic overlays. Heel Clutching System is made up of an exoskeletal heel counter that promotes an improved fit and increased support. ComforDry X-40 sockliner offers antimicrobial properties for a drier, healthier environment. I.G.S (Impact Guidance System) is an ASICS design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike through toe-off. FluidRide midsole technology provides the ultimate combination of bounce back and cushioning properties with reduced weight and exceptional durability. Rearfoot and forefoot GEL cushioning system attenuated impacting shock and allows for a smooth transition to midstance. Dynamic DuoMax System increases stability and support with reduced weight and enhanced platform comfort. AHAR (ASICS High Abrasion Rubber) is known for its supreme durability and is strategically placed throughout high-wear areas of the outsole. DuraSponge forefoot outsole material is comprised of a blown AHAR rubber for superior cushioning and long-lasting wear. Guidance Trusstic System integrates Guidance Line construction to enhance gait efficiency while promoting mid-foot structural integrity. Imported. Measurements: ; Weight: 10 oz ; Product measurements were taken using size 9, width D - Wide. Please note that measurements may vary by size.