Increase your size and stamina with an essential workout with the Glow Pump. So simple and fun to use and super-effective, place your manhood in the pump and watch as the vacuum works to help increase the size of your erection. Use with a water-based lubricant, insert your penis and pump the bulb until you can feel a tightening around your member. Continue and enjoy the sensational feeling as the suction increases with every pump. The Glow Pump can improve blood flow which can lead to improved penis size, staying power, and intensity of orgasms. To end your workout, simply press the quick release button on the bulb to release the air pressure. The Glow Pump is easy to assemble and clean using your favorite toy cleaner.