Sporting the lightest Boost compound ever, the adidas Ultraboost Light have a flexible, supportive build perfect for your daily runs. The Boost cushioning partners with the LEP system in the midfoot for a plush, propulsive running experience. Sustainability is at the forefront of the design, foot-hugging Primeknit+ is constructed using 50% Parley Ocean Plastic and 50% recycled polyester. This innovative design runs through to the rubber of the outsole, the compound uses natural and virgin rubber for a flexible, grippy feeling underfoot.