Nike AS M NK DF FLEX WVN SHORTNike Flex Men's Woven Training Shorts MOVE FREELY THROUGH EVERY SET. The Nike Flex Shorts are made to keep you moving during high intensity training. Nike Flex fabric stretches with every move, while vents at the hems are ideal for deep bends like lunges and squats. This product is made with at least 50% recycled polyester fibers. Natural Movement Nike Flex fabric stretches with your body, helping you get the most out of your performancewithout