Go on and bring the heat. It won’t slow you down in these adidas by Stella McCartney running shoes. They are detailed with a ventilating cutout to maximise airflow and help you stay cool as the miles fall behind you. Plush Boost cushioning makes every take off and landing feel like a good one, aided by the adidas Primeknit upper that adapts to the changing shape of your foot.This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. No virgin polyester.