These Nike Free Metcon 6 workout shoes are made with forefoot flexibility. The heel is reinforced with extra foam for a stable base. The outsole is laser-siped for better flexibility and the big-toe side of the forefoot is rounded for better agility. More foam is added 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 a dynamic and secure fit. The multi-surface traction pattern is made for any workout surface and activity. The inner sleeve increases ankle support and provides a more seamless fit. They feature lace up closure.