The Sport Fucker MotoVibe Rev-Cockring revolutionizes the construction and use of the popular cock ring by crafting it from super soft, medical grade silicone and motorizing it in order to create entirely new sensations and patterns of play. Unlike other silicone rings, the Rev-Cockring is not designed to stretch. Rather, it is meant to be worn like a metal or rigid ring, with a ring size that is slightly larger because it does not expand. The ring features high quality, medical grade material that is both waterproof and phthalate free. With 10 custom vibrations to cycle through, Rev-Cockring wearers will experience a wide range of stimulation and control. Despite the power the Rev-Cockring packs, no batteries are required—it's quickly and easily rechargeable with the included USB cord. Features: Vibration with 10 frequencies Waterproof Compatible with all sexual lubricants Store separate from non silicone items Material: Silicone USB rechargeable, cord included.