Since 2005, adidas by Stella McCartney has balanced athletic performance with attention to fabric, colour and detail. These adidas by Stella McCartney Ultraboost Parley Shoes fuel every step of your 10K with the energy-returning power of Boost cushioning. Accented with space-dyed yarn, the sock-like upper has an outer cage for a supportive fit that rides on a flexible, durable outsole.adidas is dedicated to creating products in ways that minimise their environmental impact. This product is created with yarn made in collaboration with Parley for the Oceans. Some of the yarn features Parley Ocean Plastic?, which is made from recycled waste, intercepted from beaches and coastal communities before it reaches the ocean.