The adidas Ultra Boost Wool Grey became the first Ultra Boost to have a Primeknit upper made of wool. Initially released in 2015, the original colorway came back in 2020 with a true-to-OG design and fashion, making it ideal for year-round wear. This model features a black outsole and a white midsole, while silver and grey cover the entire base of the sneaker. The classic three stripes in grey keep the laces in place, complemented by a darker grey overlay toward the heel for contrast. The wool Primeknit lends a unique look, seamlessly blending with the overall design. The adidas Ultra Boost Wool Grey was released in August of 2015 for $180.