Love ball duo with patented retraction loop to be worn inside the body. Thus, you can enjoy your secret of pleasure/vaginal muscles trainer everywhere quietly and discretely - even when doing sports or going swimming! Dishwasher safe/100% waterproof. Ball Ø 3.7 cm. Material: silikomed (TPE), phthalate-free according to EU Regulation REACH. Storage bag and lubricant tester included.