You'll float along the road and push past your limits in Adizero's Boston 11 running shoes. Highly responsive Lightstrike Pro+ cushioning combines with durable Continental Rubber outsoles for a smooth, supported ride from start to finish. 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.