Simply insert your penis into the cylinder, letting the internal suction sleeve create a tight seal, and squeeze the hand bulb to start pumping up! When you have the size you want, just press the release valve button above the bulb to break the vacuum, and remove your penis, swollen and ready to go!
Does not have good suction. Plastic feels uncomfortable, and weird. Doesn't work well. You would have to be really big in size if you would want this. It doesn't have to much suction power.