The A10 Cyclone SA’s exclusive inner sleeves are all made out of high-quality material that feels just like real skin. Its tight, textured interior creates realistic feelings when combined with lubricant. The rotation will bring out the pleasurable friction to the fullest.Only compatible with the Vorse A10 Cyclone SA but it’s easy to insert and remove for cleaning, just remove the inner case from the main unit and firmly set it with the 6 pins. Insert the inner case into the main unit, make sure that it is firmly set, add the top cap and that is it, ready to use.Please note, this is just a sleeve insert not the complete item, please order item RENDS Vorze A10 Cyclone SA Masturbator.