Like lacing up in a second skin, these men's Free RN 2 trainers from Nike are a natural extension of the foot. Ultra-light mesh keeps you cool on the move, locked down with Flywire cables for adaptive support. Auxetic foam flexes in all directions, delivering a smoother, more fluid ride with every step, while targeted rubber pods optimise grip when you hit the ground running.. Material: Textile Upper/Synthetic Sole