Outer Material Type : Synthetic,Recommended Use Traininn : Fitness Ready to get back in the box-Mark your territory and expand your fitness potential with the Nike Metcon 7 training shoes. The absolute CrossFit rulers return with an even more resistant and stable design than the previous Metcon 6, showing the swoosh brand’s care for high-impact routines.Nike React now plays a key role in the Metcon 7’s midsole.