Nipple Enlarger KitWith proper use you can enlarge and stimulate your nipples using the Nipple Enlarger Kit. It Utilizes the same concept as traditional penis pumps, which have been effective in enlarging penis size. The cylinders are crafted from industrial grade clear acrylic. The vacuum lock release system allows the nipple cylinders to stay on without the pump. Use the dual T connector to enlarge both nipples evenly and to ensure constant pressure. Measurements: 3.