Nexus Enhance is a vibrating cock and ball ring, perfect to use alone or with a partner. The rings will keep you going harder and longer whilst the 6 function vibrator will stimulate you or your partner, dependent on how you wear it! *6 stimulation modes *100% silicone *Rechargeable *Waterproof/submersible Large ring has an inside diameter of 42mm Small ring has an inside diameter of 33mm