LIGHTWEIGHT, BREATHABLE SUPPORT. The Nike favourites Sports Bra delivers sweat-wicking comfort and a supportive feel during low-impact workouts. The low-cut design and thin, adjustable double straps combine for a comfortable, breathable fit. This product is made with at least 50% recycled polyester. Dri-FIT technology helps keep you dry and comfortable. Complete with a strappy design that lets the airflow to help keep you cool.