Innovated for more cushion, more comfort and less weight for a run like no other, the Ultraboost 5 is here to harness your running energy. This shoe's midsole is made with Light BOOST, our highest energy return cushioning system. Ultraboost 5 also features molded external heel support to provide optimized support where it's needed. The PRIMEKNIT upper creates the ultimate fit while our Torsion System provides next level guidance all the way through your gait. And finally, the world-class grip of the Continental? outsole enables the perfect traction and transition. 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.