The A10 Cyclone SAs exclusive inner sleeves are all made out of high-quality material that feels just like real skin. This Master texture has lots of flaps to create an amazing fluttering sensation. Only compatible with the Vorse A10 Cyclone SA but its 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.