Men's Adidas Ultra Boost 4.0 Parley Legend Ink - Blue - Low-top sneakers One of the coolest (and most environmentally-conscious) collaborations continues with the Parley x adidas Ultra Boost 4.0. Working on one of Adidas' most popular silhouettes, this Ultra Boost uses blue spirit and legend ink on the primeknit upper, carbon on the three stripes cage, and white for the boost midsole and Continental rubber outsole. Released in June, 2018, this pair retailed for $180.