Nike’s mid Racer needs little introduction. It’s been an icon of running and casualwear since its ’77 debut. This women’s pair, though, are a little different Shadow what we’re familiar with. And that’s because there’s a load of eco-minded materials throughout, Shadow recycled KAWS across the uppers to Grind and Crater Foam — which are made using scrap waste Shadow the manufacturing process — worked into that iconic mid sole.