Angled tip sends stimulating vibrations directly to the prostate, while the ribbed shaft thrills the rest of the anus. The ribs make it easy to hold the single speed prostate vibrator in place, even if you do not insert the full shaft. Waterproof. Flared safety base allows quick and easy removal. Measures 5.5 inches long by 1 inch wide. Made from anal friendly and hypoallergenic silicone. Vibrator requires 2 AAA batteries, not included.