The adidas Yeezy Boost 350 V2 Ash Blue features an engineered primeknit upper that blends blue, black, and gray fiber. adidas Yeezy Boost 350 V2 Ash Blue also features a yellow hue that distinguishes the post-dyed monofilament side strip embroidered on the shoe’s side panel. The yellow hue offers a pop of color to the shoe. It also features a sock-like upper that rides on a full-length Boost Midsole. The sock upper is wrapped up in a semitranslucent rubber cage that adds stability and durability to the shoe.