This product is made with at least 20% recycled content by weight The Structure 25 running shoe provides stability where you need it and cushioning where you want it, supporting you on long runs, short training runs, and even when running errands before the day ends. New and improved midsole foam provides a soft and comfortable feel as you rack up the miles. A higher foam sole offers you comfort. A Zoom Air unit in the forefoot provides responsive cushioning. Additional structure and support around the heel provide a more supportive fit. Lace-up closure with lockdown. Molded heel.