The seventeenth version of this running shoe gets a modern makeover. For underpronators to mild overpronators. Open mesh with eyelets that disburse lace tension for a customized fitting environment and enhanced upper comfort. Seamless construction reduces the potential for irritation and friction caused by traditional stitches and seams. ComfortDry Sockliner for cushioning. Anti-odor properties offer a cooler, drier, and healthier environment. Heel and forefoot GEL Cushioning Systems for padded comfort. Guidance Trusstic System integrates Guidance Line construction for enhanced gait efficiency while providing midfoot structural integrity. FluidRide for the ultimate combination of bounce-back and cushioning properties, with reduced weight and exceptional durability. Impact Guidance System (I.G.S.) enhances the foot's natural gait from heel strike to toe-off. Solid rubber outsole for traction. Wt. 8.5 oz.