2 pack sports bra-Material:92% Nylon,8% Spandex.This lightweight sport bra is really comfortable and quite breathable. Removable bra period pads-The inside of the cup has a small opening that contains a removable pad. Removable pads are easy to put in & take out. Elastic Bottom Band: Bottom band elastic with strong modulus for secure snug fit and stability;plush back channels on elastic offer comfort and help move moisture away from the body. Recerback design Sports bra allows for a natural range of motion.Unlique Sexy hollow out design. Medium Impact racerback:Great to Use For Everyday Active Activities Like Sports, Workout, Gym Exercise, Fitness, Yoga, Walking, Jogging, Running, Cycling, Boxing, Bowling, Tennis,Etc.