Screaming O has a long standing reputation of producing the finest cock ring and the O Man is one of the best available on the market.
This cock ring has three benefits:

1. It keeps the penis hard.
2. It vibrates on the testicles.
3. It stimulates the clitoris with a bullet vibrator.

If you want to take your fun to the water than this cock ring is waterproof, and it is also re-usable.