The Nike Free Metcon 6 supports every workout. It has forefoot flexibility and a reinforced heel with extra foam. The outsole is laser-siped for better flexibility. More foam in the heel for improved stability. Laser-siped foam in the forefoot and midsole offers comfort. The upper is made of breathable, supportive engineered mesh with built-in stretch. Flywire cables give you a dynamic fit and help keep you secure. The athletic shoe features multi-surface traction pattern. It also has a comfortable inner sleeve increases ankle support and provides a more seamless fit. Lace up closure.