This specially-controlled rubber butt plug is perfect for anal play. Beginning at a measurement of 1.5" in diameter, it can fit into most rectal areas easily. Yet, the butt plug can then inflate up to 3" inches in diameter. It also has a multi-speed vibrator that makes for a sexually charged one-two punch. While we wholeheartedly endorse this product, please be careful not to over inflate it. You can only handle so much and this inflatable butt plug is sure to be able to take you to your limit. This item requires 2 AA batteries (not included).