Rocks Off Big Boy prostate massager is perfect for those who like that fuller feeling to give extra impact! This hypoallergenic, 100% silicone prostate vibrator is generously shaped to give you an even bigger experience. It's special design stimulates both the prostate and the perineum and the powerful, intense vibrations from the removable RO-80 Ammunition for Love bullet will rock your world. Entirely waterproof too for an even greater range of pleasurable experiences. Battery Included