Built for mild underpronators to moderate overpronaters, this shoe has all the cushioning and stability technology you need to make your next run the best one yet. FluidFit upper combines mesh with stretch reinforcements that adapt to your foot for a secure fit. Heel Clutching System adds support and makes for a better fit in the heel. GEL® Cushioning Systems reduce impact to give your stride more comfort. Impact Guidance System takes shock absorption and stability to a new level. Propulsion Trusstic System mimics the connective tissue in your foot by creating tension as your foot enters the propulsion phase. Guidance Line technology enhances gait efficiency and performance. High Abrasion Rubber is place in high-wear areas for long-lasting traction. Wt. 12.1 oz.