Perform like a pro, last longer than ever before, and extend the fun for both of you with the Vibrating Prolong Performance Ring. Made from body-safe, phthalate-free Elite Silicone, this dual-action stamina ring easily stretches for maximum comfort and proven results. The small ring wraps snug around your shaft while the large ring wraps around your penis and testicles. Try both rings pulled behind your whole package for an extra tight squeeze! The dual rings work together to gently put a clamp on performance letdowns and make you bigger, thicker, and harder than ever before! With the push of a button, turn on the waterproof bullet and you'll both be amazed! The powerful vibrations will tickle and tease her clit and send incredible pulsations through his shaft. Try it in the shower or hot tub and turn bath time into pleasure time. Cleanup is a snap after the fun with toy cleaner and warm water. Use plenty of Moist to ensure an extra wet and wild encounter! Inner C Ring Diameter: 1" (2.5 cm)  Outer C Ring Diameter: 1.7" (4.3 cm)