Yeezy Boost 350 Shoes. The infant version of the Yeezy Boost 350 is pretty much identical to the adult version and comes with a moccasin-type build with a breathable, flexible adidas Primeknit upper for an enhanced fit. A Boot midsole and full rubber outsole complete the look on this adidas Yeezy Boost 350 Infant. Guaranteed to be authentic. Size - EU 26 (UK 8.5K, US 9K) Ref: SBSH3