Nike Zoom JA Fly 4 CRS If you normally wear a

If you normally wear a whole size

Ankle-crease reduction channels

this updated version brings back the classic design with premium craftsmanship

During the race

Engineered for the unique demands of the steeplechase

Nike Zoom JA Fly 4 CRS If you normally wear aPlease note mens US7 = 7Y and so on. Sizes run small, we recommend ordering 1 2 to one full size up. Please check the size guide here. A lightweight shoe featuring a full length spike plate designed for sprinting. Nike Ja Fly 4 Sprint Spikes: Redefining Speed with Lightweight Innovation Engineered for the worlds fastest athletes, the Nike Ja Fly 4 sprint spike embodies the latest in sprint technology, combining lightweight materials, precision