This is a durable all-rubber cock ring. It's very simple to use and it helps to maintain a long-lasting erection. It can also give additional sexual feeling during intercourse. The easy release attachment opens smoothly and easy to go around the penis. The large ring, measuring 2" in diameter, goes around the testicles and the smaller attachment, 1.5" in diameter, goes around the penis. This item is very easy to clean because of the rubber material.