Remaining true to their original 2000 release, the spring-cushioned Nike Shox R4 trainers make a welcome return. They feature a four PU foam column midsole sandwiched between two solid TPU plates. These spring like pillars absorb the shock from your heel and return energy into each stride, while the solid TPU plates stabilize and distribute energy evenly across your foot. The black synthetic uppers are completed with white accents on the signature tongue branding. Model number AR3565-004.