These pumps are shaped cylindrically and are meant to go over the penis.
The pumps are fitted with a vacuum generator.
By creating the vacuum, the blood flows into the penis due to suction.
Doing this for the prescribed number of minutes per day is supposed to provide the desired increase in the penis size.
Needless to say, the effectiveness of all the above methods (except the surgery) is doubtful.
Some of the methods are not even patented, and carry the statutory warning that they are subject to the users’ risk.
Some of the herbs have adverse side effects and the penis pumps can cause damage to the ligaments in the area around the penis. Hence, care and caution is necessary.
As a last word, we’d like to add that a man becomes a man not by the size of his penis, but by the love he can give to his family, and, most importantly, his wife.
If a man is loving and caring, then penis size will become a minor issue.
Thus, live in confidence with the penis nature has gifted you with and focus your efforts in enriching your mind instead.