Rocks Off Ltd UsaThe Butt Boy is a vibrating butt plug made from high grade silicone that is soft and pliable. Silicone is very hygienic and our favorite sex toy material and is durable enough to last a lifetime with proper care. If you remove the vibrating bullet the silicone can even be boiled to sterilize it. We recommend water based lubricants with this sex toy and avoid silicone based lubricants since it could damage the toy. Since the Butt Boy is waterproof it can be used in the shower or the bath tub. Single speed vibration is turned on with a single switch on the base. The curved shaft has soft bumps on it and feels great as it vibrates the perineum. Vibration requires one N battery that is included.