Explosive and responsive, get ready for the ultimate training boost. The Men's Nike Free Train Instinct 2 Training Shoes feature an innovative 5/8-height collar for a supportive fit and feel. Signature Flywire technology locks down your foot. Dual-density Phylon provides responsive cushioning, while tri-star flex grooves promote natural movement. The firm heel creates a stable platform, enabling you to maintain your form and help prevent you form rolling during squats. Strategically placed rubber nodes on the outsole add traction and allow for a more stable landing.