Nike Dual Fusion Run - Women'sThe 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 Phylon? carrier and a soft Phylon? core creates a smooth, cushioned ride. Waffle? outsole pattern design offers a smooth heel-to-toe transition. Wt. 9.3 oz.