The adidas ZX 2K Boost ‘Grey Silver Metallic’ treats the lifestyle runner to a mostly neutral color scheme enlivened with subtle pops of color. Grey engineered mesh is utilized on the upper, accented with metallic silver three-stripes and Solar Red detailing at the forefoot and heel. The lightweight build rides on a full-length Boost midsole, coated in a shiny silver finish and an unexpected hit of Solar Red, visible beneath a semi-translucent TPU cage that wraps around the heel.