Back Door Entry with this whisper-quiet motor delivers mind blowing vibrations directly to your most sensitive spot. With one solid click of the button, you will go from flutter to a throb in seconds. Relax and enjoy the Anal Adventure. Ultra-hygienic silicone, hypoallergenic, firm yet super flexible and an easy grip. Easy cleanup, waterproof, Unisex. Dimensions: Length 4.25" Insertable 3.5" Diameter: 1.125" (max.) 0.75" (min.). Batteries: 1x AA (not included)