Four Black Velvet Balls Four Purple lustballs attached on unbreakable string tr with a sliding silky, slide coating. Simply insert them into the Vagina or Anus - each movement of the body causes the vibro-balls inside the lustballs to roll back and forth, thus creating a prickling shiver of lust in the whole abdomen. Product features and characteristics: Color- Black Ball Diameter Ø - 3.5 cm Material: ABS with PU-coating How to use: A few drops of water based lubricant ensure a pleasant feeling when inserting the toy. NOTE: Contact with oils and creams (sunscreen, edible oil, lip balm, etc.) may cause irreversible damage to the entire toy. How to clean: Carefully clean the toy before first use and after each use with warm water and a mild soap and antibacterial toycleaner.