Free 4.0
Details
Developed with insights taken from competitive runners, Nike's Free 4.0 is defined by its unconventional design and innovative performance components. This edition is built in breathable, seamless mesh with contrast synthetic detailing and fused Swooshes. Its bright padded collar supports the ankle. With flex grooves and durable waffle pistons, the Phylite layer serves as both the underfoot platform and outsole unit.
