(1) A penis pump is a vacuum device that sucks the penis in order to increase its size. The pump is placed around the base of the penis so that no air can get in. The man inserts his erect penis into the enlargement device and then pumps out the air which creates suction within the pump to stretch the penis to a larger size. Pumping is usually done by hand. The penis pump makes penis enlargement dream come true.
(2) The material of the vacuum pump is Aluminium.