Whether you're gearing up for a long run or to catch the train, this adidas by Stella McCartney cap has you covered. Pack it into your pocket or bag and go — the lightweight design is made to keep up with your busy schedule. Built from recycled nylon, it's breathable for comfort and even has a small zip side pocket for a key so you can leave everything else behind if you want. An adjustable strap ensures a just-right fit for any adventure. This product is made with at least 70% recycled materials. By reusing materials that have already been created, we help to reduce waste and our reliance on finite resources and reduce the footprint of the products we make.