Adidas Yeezy 350 MX Dark SaltSize Guide These fit snug, so go for a size up. If you normally wear a UK8 8. 5, go for a UK 9, especially if you have wider feet. The Adidas Yeezy Boost 350 V2 MX Dark Salt features a marbled Primeknit upper blending shades of grey, black, and muted blue, creating a distinctive swirling pattern. A solid black side stripe and matching heel tab add contrast, while the translucent ribbed midsole houses responsive Boost cushioning for all day comfort.