The Nike Wmns Free 4.0 reworks the innovative silhouette for a more style-focused look while maintaining its signature technology developed for distance runs and competition. This women's iteration enhances breathability through a one-piece mesh upper with structuring synthetic skin. A 'Hyper Punch' Swoosh is applied to the lateral. Its Phylite midsole and rubber outsole allow for natural flexion due to an anatomical shape and grooves.