The Sport Fucker 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-Ring 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.