The Nike Dual Fusion Run running shoe is for the modern runner looking for the ultimate combination of cushioning and a smooth ride. Sandwich mesh and leather upper combined with a dynamic midfoot system provides a superior fit and supportive running experience. Dual-density midsole with a firm Phylonï¿½ carrier and a soft Phylonï¿½ core creates a smooth, cushioned ride. Waffleï¿½ outsole pattern design offers a smooth heel-to-toe transition. Wt. 9.3 oz.