Nike Ja Fly 4 Sprint Spikes Size:M6.5 (W8.0) and is key in preventing

and is key in preventing injury

Elevate your game

Angled zip compartment makes it easier to open with one hand

and better quality of muscle contraction

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Nike Ja Fly 4 Sprint Spikes Size:M6.5 (W8.0) and is key in preventingBe the first to know about restocks & new drops. Register for our Speed Shop Restock List here. Nike Ja Fly 4Track and Field Sprinting SpikesFinish through the tape 1st in the Nike Ja Fly 4, a sprint spike made to help you set personal records in everything from the 60 to 400 meters. Our lightest Nike Sprint spike sports a revamped plate for enhanced stiffness and an updated upper for better breathability, so you can stay focused on doing your best.