The Nike Free 4.0 Flyknit is a lightweight running shoe with extreme flexibility that promotes a more natural running experience than the 5.0. It can be used as a daily trainer or a training tool.
Get closer to natural with the nimble Nike Free 4.0 Flyknit. Featuring hexagonal flex grooves for exceptional heel-to-toe flexibility, this neutral shoe allows you to function naturally through the gait cycle. The Flyknit upper features dynamic Flywire around the midfoot for an adaptive fit, while a seamless design keeps your foot wrapped in socklike comfort. Lace up the Free 4.0 Flyknit as a training tool or performance oriented trainer.