Stoner Vibes Nipple Tweezer Clamps are perfect for beginners and advanced users. A fun cannabis charm dangles at the end of each one. Bring yourself to new heights by using the ring to adjust the tightness and create the perfect pinch level for you or your partner. The tweezer nipple clamps include removable rubber tips, providing a softer feel against the nipples. Use them independently or with our fully interchangeable bondage gear companion products from the Stoner Vibes Chronic Collection. Directions for use: Hold it under direct incandescent or LED light or sunlight for 10 minutes to activate the glow.