The snug-fitting plusOne Vibrating ring enhances his size while adding sensual vibrations for both partners. The ring is made of stretchy body safe silicone that comfortably stretches around his shaft so you can enjoy the 10 vibration settings sure to enhance any encounter. The waterproof ring can be used in the bath or shower, and the powerful lithium ion rechargeable battery lasts up to 2 hours on a single charge.