You're one of those athletes who run around the clock, challenging and encouraging each other to shatter goals. This must-have training shoe features a lighter, more breathable upper than our previous version, without losing any of the durability and comfort you need to perform at your best and dominate your workouts. Flexible and responsive, the Nike React foam provides comfortable, lightweight, dynamic cushioning when you're engaging in cardio workouts and sprints. Grippy rubber wraps the arch for intense rope climbs. The rubber outsole gives you optimal traction and stability when you go from the gym floor to the pavement. The flat, wide heel gains stability with an internal plate that distributes weight from edge to edge. It also moves with your foot for comfort durant your cardio workouts and sprints. Lightweight mesh with textured reinforcements on wear areas to give you maximum coolness without losing strength. A tongue locks the laces with a Velcro closure to keep you out of the way. A heel clip keeps you from slipping when exercising against the wall. Grooves on the sole allow the forefoot to bend naturally.