As far as making me last longer, this thing went above and beyond. My wife was more than satisfied, however she reacted ALOT more when I took it off. Her opinion was that it felt good and I "hit the spot" however to her it felt like I was "using a dildo" and it didn't feel like me. She likes the heat from the real thing, my only suggestion would be to somehow incorporate the heat factor tp make ot feel more real to the female. I know there are other sleeves, but they are often just huge extensions. Im looking for a perfect fit like this one that also is shaped and feels like the real thing for my wife. Overall I am very pleased with the product though, definitely adds some girth and let's you last long enough to get the job done a few times 😉