The Bella 7 sneakers provide support and stability during workouts. The updated mesh upper stretches with each lunge and move. The heel Air Zoom unit combines with a plastic plate and rubber cage in the heel. Cushioning under the forefoot and heel softens the impact of your workout. The heel Air Zoom unit combines with a soft foam midsole to help keep you comfortable. Soft, breathable mesh blends seamlessly into the design and adds comfort with each step. These Nike workout shoes have a lace up closure.