The Free Metcon 6 workout shoes support every grunt and growl. The forefoot flexibility of the trainer is increased and the heel is reinforced with extra foam. The outsole is laser-siped for better flexibility. 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 multi-surface traction pattern is made for any workout surface and activity. The comfortable inner sleeve increases ankle support and provides a more seamless fit.