The Adidas Yeezy Boost 350 V2 'Ash Blue' features a neutral look on its signature construction. The shoe's upper is built with re-engineered Prime-knit, finished in a mix of blue, grey and black, with a yellow monofilament stripe cutting through the side wall. Underfoot, a full-length Boost midsole wrapped in a semi-translucent rubber cage provides cushioning, giving way to a rubber outsole for traction.