Let your Nipples Rise to the Occasion with the NIPPLE BULB, a gentle little suction device for enhancing and raising your nipples! Just apply to the nipple and squeeze for light, comfortable suction! To use the erection "O" rings, slip ring on the vacuum tube before suction begins. Then, slide off tube onto erect nipple! The NIPPLE BULB comes complete with 4 Nipple Erection Rings!!!