BOOST midsole Lace closure Regular fit Step into a world of comfort and style. Borrowing the best of Ultraboost DNA, these adidas shoes transform a running icon into a streetwear pair for everyday wear. BOOST cushioning responds to every step you take, giving you the energy to do your thing all day. An adidas PRIMEKNIT upper offers adaptive support as you go. This shoe's upper is made with a high-performance yarn which contains at least 50% Parley Ocean Plastic - reimagined plastic waste, intercepted on remote islands, beaches, coastal communities and shorelines, preventing it from polluting our ocean. The other 50% of the yarn is recycled polyester.