The 2002 release of the R4 was everything you had come to expect of this futuristic running shoe. At $140 you got a molded lightweight mesh in the upper, Shox tech in the heel, forefoot Pylon with flexible air sole unit and BRS 1000 and Duralon combination outsole. They weren’t my favorite running shoe of all time but there’s no denying this was a solid piece of footwear. Check them out below!