Lightweight - durable phylon midsole doubles as outsole Stability during movements - Flywire cables Secure midfoot - Dynamic stretch bands Superb grip - Tri-star flex grooves Get a kick start to your training session with the Free Trainer v7 Men's Cross Trainer from Nike. Built for cushioning and power with an intuitive design. Flywire cables support cutting movements while dynamic stretch bands at the midfoot secure your foot. The Tri-star flex grooves support natural movements while a phylon midsole is durable enough to double as an outsole for reduced weight.