Multi-weave flyknit construction brings breathable flexibility to a lightweight training shoe fitted with signature Flywire cables for a snug, locked-down fit no matter how you train. Tri-star grooves in the tread allow the sole to expand and contract in every direction with your foot for natural mobility in any sport. Style Name: Nike Free Focus Flyknit 2 Bionic Training Shoe (Women). Style Number: 5315229. Available in stores.