It's an ok pump , I ripped the flimsy rubber boot the first day , now have to order stronger one , and level one doesn't do anything, have to use level 2 or more to feel it , it di do it's job though !
This thing can suck, its silicon is way to tight. I bought universal sleeve thinking my penis would be to small , it will fit tiny guys.
This pump has a crazy amount of suction. Two is about all you want.
The sleeve that comes with it is really tight. I bought the silicone sleeve and it works well even though it falls off the pump when not in use.
Instructions that came with unit is very vain. There's nothing listed on how long to keep your cock in the pump or cycles?
This pump
Works the best sucks you in good makes your penis thick and long. Full erected cock with less effort and discomfort then handheld manual pumps