The standard pump sleeves on the perfect pump penis pump, slide the penis through the opening and use the pump to create a vacuum. Apply plenty of lubricant to the penis and slip it into the cylinder. Squeeze the attached bulb to create a suction effect and simply press the lever for quick air release. It is easy-to-use penis pump to increase the size and strength of the penis. The hand-held pumping with quick-release valve for safe, controlled pressure management.