From a walk in the park to a weekend run with friends, these adidas Ultraboost 1.0 shoes are designed to keep you comfortable. An adidas PRIMEKNIT upper gently hugs your feet while BOOST on the midsole cushions from the first step to the last mile. The Stretchweb outsole flexes naturally for an energized ride, and Continental Rubber gives you the traction you need to keep that pep in your step. Lace closure. Yarn in upper contains at least 50% Parley Ocean Plastic and 50% Recycled Polyester. Imported.