Built to inspire confidence, the Nike Free Trainer 3.0 V4 features a completely revamped upper. Backboned by an internal heel counter, the upper features a woven circular-knit mesh that strengthens when the foot is engaged in order to reduce friction during movement. The one-way stretch of the upper provides the shoe with both directional flexibility and strength: fibers expand lengthwise with the natural motion of the foot, while locking in place during lateral movement in order to provide stability. Design wise, the variety of patterns generated by the use of the circular knit materials creates a disruptive visual pop, allowing athletes to be explosive in both their movements and their style.

The latest Free Trainer 3.0 V4 continues to utilize the innovative Free 3.0 outsole of its predecessor: its hexagonal flex grooves are molded to offer six different flex points, providing the ultimate capacity for natural motion. The Nike Free Trainer 3.0 V4 is available on July 8 at Nike.com and select retail locations.