This silicone triple cock ring is smooth and stretchy. You can easily stretch the big ring around the base of your cock and balls. Then you can use the other rings to firmly grip your cock and scrotum. Once your cock is secure, it's time to ram home the teardrop shaped plug. The smooth tapered head helps fit the fat plug, but once it's in your body can really clamp down on it. Unlike more rigid designs, the stretchy silicone pretty much guarantees that you'll be able to fit all parts of cock ring and butt plug combo.
The whole thing is premium silicone, so cleanup is easy with soap and water. It should even be able to take a ride in your dish washer with no adverse effects. You can use water or oil-based lubes with it, but silicone lube might weaken it over time. With very little care it should last a long time.