BOOST midsole Lace closure Textile lining Stretchweb outsole with Continental Rubber Run wild. Marimekko is a Finnish design house known for its eye-popping prints. These adidas Ultraboost shoes wake up your running style with a bold pattern on the upper. Wear them for training or as part of your daily rotation. BOOST offers incredible energy return, and the Stretchweb outsole with Continental Rubber provides a smooth and flexible ride. 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.