Suede/mesh uppers. Boost midsole. Rubber outsole. D-ring laces. True sizing. The ZX 500 RM from adidas are another bring-back from the hallowed trefoil archive. Originally launched all the way back in the 80s, the trabs in adidas ZX collection were the undisputed don dadas of running shoes, thanks to their high-tech designs, based on biomechanics research. History and technical jiggery-pokery aside, these doozies are a certified feast for the eyes, soul and errr feet.