665 is proud to offer B-Balls by FunFactory. This German-made, medical-grade silicone toy offers the wearer a unique experience. Both round shapes are hollow and contain a ball, which moves around as you walk. See how much fun you can have with your everyday, seemingly mundane activities like riding the bus to work, or taking a jog. For a special treat to a deserving bottom, touch a vibrator to the flange of the toy while it’s locked in the boy’s ass. You will hear a slight rattle that will be over-shadowed by the moans of pleasure coming from your boy.