Nike Men's Free Trainer V7 Tb Ankle-High Training Shoes Synthetic Imported Fabric sole With each step, the updated Nike Free sole expands and contracts in all directions, following the natural motion of your foot. A 3D-printing-enhanced upper provides targeted areas of durability, breathability and stability right where you need them. A half-sleeve design with Flywire cables and stretch bands provides a locked-in fit during intense workoutswhile still providing easy on and off. No-sew overlays for durability Heel counter helps improve stability