Merci Vibro Grippers Nipple ClampsGet clamped, feel the vibes. The Merci Vibro Grippers are vibrating nipple clamps designed to send your nips to outer space with all the sensations they are capable of producing! Feel the pinch and tease of the strong clamps before you explore the 10 vibrating speeds and functions. Play for up to 2 hours on a full charge, then pop them back into the case to get charged and ready for the next time you need a dose of nipple vibes!