Yeezy - 350 Boost Sneaker A monochromatic Onyx hue Yeezy Boost 350 from Adidas and Kayne West. The upper features a dark Primeknit weave along the rope laces, while a post-dyed monofilament side stripe can be found in a lighter black shade. A full-length Boost unit is encapsulated in a semi-translucent ribbed TPU midsole, while a black rubber outsole rounds out the look. Worn TWO times… practically brand new!