The Advanced Fireman’s Pump is the pump for the man who wants that real fire hose between his legs. Pump up your manhood to its optimum size for increased performance, better erections, and maximum pleasure. This easy-to-use fully automatic design will have you on your way to the gains you crave in no time. Pumping works using a vacuum that creates an airtight seal around your penis. It uses pressure and increased blood flow to improve your size over time . The easy-to-operate design makes pumping your way to a better erection a breeze. Wash before and after each use.