Boost cushioning deliveries incredible energy return: the more energy you give, the more you get LEP torsion system in the midsole provides less flex in the forefoot for a more responsive stride Made with recycled materials to save resources and decrease emissions You don't have to run far to feel the benefits of training. Slip on these adidas shoes, and you're only a few miles away from a good mood. They're designed for short runs, with a BOOST midsole that offers incredible energy return with every step. The Stretchweb outsole flexes naturally for an energised ride, and Continental Rubber gives you superior traction. Primegreen These shoes are made with Primegreen, a series of high-performance recycled materials. The upper contains a minimum of 50% recycled content.