The Free Metcon 6 supports every grunt and growl. This athletic trainer has more forefoot flexibility and a reinforced heel with extra foam. This Nike shoe has laser-siped the outsole for better flexibility. The big-toe side of the forefoot is rounded for better agility and quickness when making sudden movements. More foam was added in the heel for improved stability. The upper is made of breathable, supportive engineered mesh with built-in stretch. Flywire cables give a dynamic fit and help keep you secure during your workout. The multi-surface traction pattern is made for any workout surface and activity. A comfortable inner sleeve increases ankle support and provides a more seamless fit. The shoe has lace-up fastening and is cushioned.