Use it during low - medium intensity workouts. It's perfect for fitness enthusiasts looking for support. The bra is made of 93% Nylon, 7% Spandex for the power mesh bra layer with removable cups, and 75% Nylon, 25% Lycra for the BLOCHeverhold part. It has a scoop neckline, racerback, concealed elastic underbust, minimal seams, high stretch, and a soft finish.