Designed to reach your maximum speed over 100m and 400m. Approximately 147 g What's new? The generative cellular pattern preserves lightness and reinforces rigidity in strategic areas. The upper is made from the new Atomknit material, a variation of Flyknit. It is woven and treated specifically to meet the lightweight, comfort, and support requirements of sprint events. High performance features Atomknit material, a revisited version of Flyknit, for a comfortable and lightweight shoe with better breathability. The pad-printed Swoosh logo helps reduce weight. The outsole is stiffer but lighter. The lugs distributed across the plate provide excellent grip on the ground during turns. And the eight removable stainless steel spikes further improve track traction. The serrated laces stay securely in place, with little risk of untying.