Nike Shox R4

When the unusual, springy looking Shox made its debut on a shoe in 2000, it looked like something straight from a science-fiction movie. After years of trial and error, Nike Shox technology made its big breakthrough on a visit to an auto manufacturer when they had suggested trying the material used for car jounce bumpers. Nearly two-decades later, the Nike Shox R4 returns with the same double-lasted synthetic upper and unmistakable heel platform.