adidas Ultraboost 21 Review | The Sports Edit。like new condition only worChasing new PRs feels easier in these adidas running shoes. Our lightest BOOST yet delivers continual energy return across the miles so you feel fresh from start to finish. Add the Torsion System between the heel and forefoot for stability and you get a smooth, steady stride no matter how far or fast you go. It all rides on a Continental™ Rubber outsole for secure traction in wet and dry conditions to keep you confident on your feet. This product features at least 20% 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.Sleek black design. Ideal for sports and casual wear. Durable and comfortable.