Nike Mens Wild Trail Running Shoes Synthetic Trail-ready upper with gusseted tongue and gilly lacing system for a customizable fit. Reinforced toe and heel for 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