Black, Silicone Butt Plug With 2 Heavy Balls Inside Create A Unique Sensation. The 2 Balls Will Knock And Shake Once You Inserted.↵Key Features:- Length: 10 Cm- Diameter: 2.2 Cm And 2.6 Cm- Color: Black- Material: Smooth Silicone↵Note: Use Only With Water Based Lubricant! Contact With Oils And Creams (Sunscreen, Edible Oil, Lip Balm, Etc.) May Cause Irreversible Damage To The Control Unit And The Entire Toy.↵How To Clean: Carefully Clean The Toy Before First Use And After Each Use With Warm Water And A Mild Soap. The Cleaner Is Especially Suited For Cleaning Erotic Toys