Nike Womens Free Training Flyknit Running Shoes, Blue Lagoon/Black-copa 8 Rubber Made in USA Molded, stretchy inner bootie wraps up the heel for a comfortable, personalized fit Rubber pods on the side of your foot provide enhanced traction and stability for activities like side planks Strategically placed rubber on the heel and toe for added durability in high-wear areas Hexagonal flex grooves are hot-knife cut into the midsole to create six different flex points that allow your foot to move more naturally than ever before. The one-piece Flyknit upper hugs your foot with a sock-like fit for incredible lightweight support. Breathable areas are seamlessly integrated in the Flyknit to provide cool comfort during your workout.