This is a cock ring. You put it on your cock. The rationale behind using a cock ring is that it constricts slightly and keeps the blood from leaving the penis, allowing you to stay harder longer. Many people also find that a cock ring allows them to last longer, too. Since this one is adjustable, you can control how tight or loose you want it.

This cock ring is made out of leather and has metal fasteners attached along its surface. The leather seems to be of good quality; it has more texture than what you normally get, but the way the metal fasteners are attached is pretty cheap. They WILL fall out. And most likely they'll be the ones you've been using.

The great thing about the design of this cock ring is that its adjustable to a wide range of measurements, so you don't have to take your size into account when you buy it. The fit can be as loose or snug as you like. The style and overall effect of this piece is really cool. It looks classy and sexy compared to rubber or silicone rings in my opinion. Its fairly big even at its smallest setting, so keep that in mind.