Penis enlargement Pump has a cylinder tube which you place over your penis to create vacuum. By using the penis pump, slowly draw out air off the cylinder, causing an increase in the blood flow to your penile area. When blood flows to the head of your penis, the erectile tissues expand to accommodate the inflow of blood. Repeated use of this will cause this tissue expansion to become permanent and prolonged, resulting in penis growth and larger erections. Men with removed prostate due to prostate cancer have lower quality of sex life due to insufficient penis erection strength. Penis pump will help men to get stronger erections and improve quality sex life, dramatically.