Make your nipples sensitive with the Vibrating Nipple Pleasure Cups! Using techniques derived from ancient Chinese cupping sets, these unique nipple cup stimulators allow you to apply amazing suction to your nipples and combine sensation with exciting vibrations! The plastic pleasure cups are lined with super soft silicone and have powerful microwaves that give incredible vibrations where you want them most! For best results, open the vibrator, place the cup on your chest directly above your nipple, connect the medical pump ball until you reach the desired suction level and remove the pump ball. Once you have removed the pump, the cup will retain its strong suction until you pull the release pin to the top of the cup. You will enjoy instant vibrations in your most sensitive area, while your partner will enjoy your new look! Your nipples will swell with passion, leaving them upright, swollen and extremely sensitive. Once the vibrations enter, you will enjoy hands-free stimulation in your most sensitive areas. To release the suction, simply pull the pin on top of each cup to release the pressure.