Feel and perform your best with the help of the Boner Booster! The Glow in the Dark Boner Booster offers amazing suction for ultra big & hard erections. This lime green penis enlargement vacuum pump works by squeezing the medical style pump ball until the desired suction is achieved. When you are ready to release the vacuum pressure, simply turn the release valve on the ball pump. The cylinder measures 7.5" long with a diameter of 2.4" and has a flexible rubber sleeve at the base to ensure a comfortable, tight fit. Get bigger, harder, and longer lasting today!