The ASICS GEL-Kayano you know and trust is back and better than ever with all the stability features you need to keep running strong. FluidFit upper combines multi-directional stretch mesh with reinforcements that adapt to your foot for a breathable, customized fit. Re-engineered Heel Clutching System with exoskeletal heel counter improves support and fit. ComforDry X-40 antimicrobial sockliner creates a drier, healthier environment for your foot. Dual-density DuaMax Support System enhances support and stability to keep you running strong. Rear- and forefoot GEL Cushioning Systems absorb and disburse shock on impact, creating a smooth transition through the gait cycle. I.G.S. (Impact Guidance System) employs linked components to enhance your natural gait from heelstrike through toe-off. Guidance Line vertical flex groove in the outsole creates a smooth, flexible transition through your stride. Wt 8.9 oz. International shipping is not available.