Ideal for the guys that like to see just how much their penis is extending when pumping we have the superb sailors Pump, a 9 inch crystal clear chamber with side measurements so when you pump up your penis you can watch it grow. The stunning Sailors Pump comes with three different sized soft seals so that when you slide your shaft into the Sailors Pump it creates an airtight seal around the base of the shaft, and then start squeezing the hand pump to watch it grow. Pumping you penis will create a vacuum and suck your penis so that you achieve a longer and thicker penis with a firmer rock solid erection to enable you to last longer when indulging in masturbation or sexual playing.