Immediate power for your penis!Put your penis into the red-transparent cylinder, where it will be kept safely embraced by a black latex ring. When sucking the air out of the cylinder with the handy rubber pump, you can see your penis grow stiff and full. Thanks to the handy pressure valve, the vacuum will even persist when the tube is disconnected, as long as you wish to practice. Size of cylinder: 22 cm, interior Ø ca. 6.5 cm.