This pump will do what it says. What I don’t like is the suction pulls around the base of the penis making that area very sore if you use this a lot. You will use it a lot because it has the potential to make you look huge for a small period of time then things go back to normal so you do it again. I have pumped so much that the pressure will literally make you orgasm ( not the intended use and do not recommend. These are fun to have but they do cause pain and discomfort