When the Shox R4 made its audacious debut in 2000, it shattered the mold of traditional pavement pounders. The silky smooth synthetic upper is inspired by the futuristic look of concept cars, featuring fluid ripples, laser perforations and a design built to help move you forward. And just like the original, four compressive columns lift the heel for stability and bona fide bounce. Cloaked in black and Hot Punch synthetic leather with hits of Vapor Green, this stunning edition takes the R4 even further into the future.