The Nike Free Metcon 6 workout sneakers open the world of workout possibilities. These sneakers feature more forefoot flexibility, a reinforced heel with extra foam, and laser-siped outsole. The big-toe side of the forefoot is rounded for better agility and quickness when making sudden movements. More foam in the heel for improved stability. Laser-siped foam in the forefoot and midsole offer flexibility and comfort. The upper is made of breathable, supportive engineered mesh with built-in stretch where needed. Flywire cables give you a dynamic fit and help keep you secure. The multi-surface traction pattern is made for any workout surface and activity.