For those who want to expand the potential for arousal from nipple stimulation, or for those who love constant attention on their nipples and areolas, these rotating silicone nipple suckers are for you! Each of the cups holds on via suction so they are hands-free! Once on, press the button and enjoy the premium, phthalate-free, silky smooth silicone as it rotates across and around your nipples! Comes with a set of two different attachments. One of the attachments has longer, thin nubs that go around the nipple and stimulate the sides of the nipple and the areola. The other set has shorter nubs that stimulate the top of the nipple directly. Rated as IPX5 waterproof, it is splashproof and can handle low pressure jets. Do not submerge under water. Use only with water-based lubricants. To recharge, use the USB charging cable provided. So many sexy studies have shown that nipple stimulation is arousing, but you've only got so many hands! Free up your hands to touch other erogenous zones by placing these suction cup nipple stimulators on and letting them keep you titillated and teased while you build up a Big O with the combination of these suckers and a vibrator, penetration, or some oral attention! Enjoy using both attachments as you please to get the most out of these sexy suckers! Squeeze the silicone grips on the sides of the sucker and place the sucker over the nipple. Once the sucker is in position, release the silicone grips to create suction to hold the sucker in place. Press and hold the button on top of the sucker for 3 seconds to power rotation on/off. Press repeatedly to cycle through 10 rotating patterns. To swap out the silicone attachments, firmly grasp the attachment and pull while wiggling it back and forth. Attachment will pop out and the new attachment can be pressed into place. Measurements : Overall length: 3.3 inches. Cup opening diameter: 3 inches. Cup depth: 1.3 inches. Materials : Silicone, ABS plastic Color : Black, clear Note : Do not submerge underwater. Rated IPX5 waterproof and can only handle low pressure jets. Use only with water-based lubricants.