Normal wear and tear. See photos. Representing a new gold standard in weight training, the Nike Women’s Metcon 7 is even tougher than previous models, with React foam for optimal comfort and lock-down lace tabs to prevent untying during high-intensity training. The shoe’s wide, flat, and flexible heel also now includes an inner plate that distributes weight from edge to edge for improved stability, while revamped rubber wraps along the arch offer better traction on rope climbs.