The adidas ZX6000 "Inside Out Grey" released on May 14, 2021, with a retail price of €140. It was the grey option of the "Inside Out" release, which also included aqua and blue colorways on the same day. The drop started at 10:00, while many stores opened their online sales right at 00:00. The ZX6000 was part of the adidas ZX family, a running line that began in the 1980s and returned in many versions in 2020 and 2021. The gray colorway was the most neutral of the three. Today, the pair is mostly available on marketplaces such as KLEKT.
