The Inflatable Butt Blaster is a multi-speed anal toy. It has a hand pump with a hose. All you have to do is pick your vibration speed, lube up the plug with some of the free lube provided, and start pumping. This is a great way to experiment with how much you can handle up there. People who like anal sex, love this inflatable butt plug. Maximum size is two inches when totally inflated. Requires 2 AA batteries.