Nike Metcon 8 Men's Workout Gym Training Shoes Black Smoke Grey White Size 10. Delivering a smooth, responsive ride, Nike React foam makes a comfortable, cushioned base that feels lightweight and springy when you kick into high gear for cardio and sprints. Grippy rubber wraps around your arch during intense rope climbs. Rubber tread gives you traction and helps you stay on your feet when transitioning from the training room floor to the pavement. The wide, flat heel gets even more stable with an inner plate that distributes weight from edge to edge. It also flexes to make it comfortable for cardio and sprints. Black/Dark Smoke Grey/Smoke Grey/White DO9328-001 H1-515