The Rocks-Off Big-Boy; Big is better. Combined prostate and perineum stimulation for big boys who play with big toys! This unique product is made in soft, flexible, body safe silicone. Sit or stand, the stimulation is hands free, and with the included bullet, has powerful vibrations directly sent to your P Spot. Are you Big-Boy? Silicone. Waterproof. Phthalates Free. Batteries Included.