The Nike OTR Dual Fusion Trainer II is the training shoe for the all around athlete. Durable mesh upper with forefoot and heel underlay straps provides optimal lockdown and breathability. Dual Fusion technology offers a softer underfoot cushioning system surrounded by a firmer density system. Solid rubber outsole adds durability. Omni-Trax and flex grooves give great traction on multiple surfaces. Removable insole. Wt. 11.7 oz.