MegaBounce is now mega-better. The new, improved MegaBounce heel in the adidas Megabounce 2008 running shoe absorbs even more impact, returning even more energy with every stride. The result? More fun with less effort. Synthetic leather upper provides light weight and durability. adiPRENE®+ insert adds forefoot propulsion and efficiency. Bounce technology offers optimized energy return and step in comfort. adiWEAR® outsole gives best durability in high wear areas. Wt. 13.0 oz.