Specification :

The United States Association of human sexuality men increased strongly recommended, lasting devices to a special ergonomic design of the space flow, pressure design, there is another conventional vacuum effect. Ke Yi you need to properly regulate the pressure, constant pressure, so that a complete penis from the inside out congestion, daily use of about 10-20 minutes, regular increase by a hard and durable; commonly used in major hospitals and clinics in the United States physical therapy; special referral, high-tech product you now can have.