Blending the flexibility and free running comfort of the Nike Free RN and the stable lifting base of the Metcon, the Nike Free Metcon 3 Training Shoes are perfect for whatever your workout throws at you. Free RN flex grooves in the forefoot deliver natural running comfort for your cardio training sessions. The wide Metcon heel delivers a stable base for weight lifting. A soft foam core cushions every step with firmer foam encasing it for stability.