Penis pumps use a vacuum tube around the penis to force blood into the
member, thereby making it longer, harder, and bigger than it normally
is in its erect state. Though it hasn't been proved, there are those
who claim that prolonged use of pumps can permanently increase penile
length by stretching the ligaments in the penis. Nevertheless, penis
pumps do provide at least temporary erection enhancement, and many men
find the suction provided by the pumps to be very stimulating, sort of
like a mega blow job. A vibrator in the pump can increase the level of
stimulation. Usually the vibrators in penis pumps are small bullet or
egg vibrators located at the base of the shaft, but some have
vibrators placed at the top of the tube. If you're pumping to achieve
size and length a vibrator in your penis pump isn't going to make any
difference. But if you're using it as a masturbation toy, a vibrator
can turn your pump job into a hummer.
