ou can’t go wrong by starting with the basics, so we’ll do exactly that. The sole unit is an exact carry-over from the 2013 Adios Boost, no changes there. A near full length layer of Boost foam (see this review for a complete Boost lowdown), capped on the top with a harder EVA rim. On the upper, major changes take place, if you use last year’s Adios as a frame of reference. Adidas does away with the signature upper design language found in its Boost line up – things like the distinctly shaped heel counter pattern, mid-foot design and Tech-Fit-mimicking overlay on its toe box. Instead, it reverts back to the design and material fundamentals of the 2012 non-Boost Adios 2, bringing back soft synthetic nubuck and a much more simpler design. The mesh used is the same, a breathable lightweight type which runs across the upper surface without a lining underneath.