adidas 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, and BOOST on the midsole cushions from the first step to the last mile. The Stretchweb outsole flexes naturally for an energized ride while Continental™ Rubber gives you the traction you need to keep that pep in your step.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.