Running shoe built for the neutral to under-pronator who requires an enhanced cushioning and extended durability. It s called the Megabounce for a very good reason. The heel of this high-tech runner is for maximum bounce, giving you a comfortable, energy-packed ride so you can run your run. Synthetic material mix and air mesh upper for maximum ventilation. Textile lining. Molded EVA insole for anatomical comfort. adiPRENE(R)+ insert for forefoot propulsion and efficiency. Bounce technology provides optimized energy return and step-in comfort. adiWEAR@reg; outsole for best durability in high-wear areas. Flex grooves for optimum forefoot flexibility. Road lugs for best grip.