The Nike Flex Trail running shoe is for the trail runner who wants the perfect blend of lightweight cushioning, durability and traction. Trail-ready upper with gusseted tongue and ghillie lacing system provides a customizable fit. Reinforced toe and heel add durability. Dual-density Phylon™ midsole features a firmer foam carrier and a softer foam core that delivers premium cushioning closer to your foot. Flexible outsole design with angled edges and spaces between each lug to allow for quick and easy mud shedding and optimal grip in all conditions. Wt. 9.0 oz.