Made of skin-friendly medical grade Silikomed®, the Joyballs "Trend" and their gentle movements might provide pleasurable stimulation when you wear them. Specific pelvic floor muscle training will strengthen the muscles and provide a more intense feeling. With a diameter of 3.5 cm and a weight of 82 g the Joyballs are easy to insert and effective. The seamless finish and integrated retrieval tab makes them waterproof, easy to clean, absolutely hygienic and safe.