The Encore Vacuum Therapy System is intended to aid in the production and maintenance of a penile erection in individuals suffering from impotence. Impotence is when a man's penis either will not get hard, or will not stay hard long enough, for him to have sex. About 30 million men in the US suffer from impotence. The Encore Vacuum Therapy System creates and maintains an erection. This Kit consists of: Four Numbered Revive Rings. Each has a different size. The center ring is designed to externally encircle the penis. The Top and bottom rings are designed for easy application and removal. A user friendly vacuum pump complete with release valve to control the amount of vacuum pull on the penis. A mounting cone, used to help fit the Revive Ring onto the penile tube. A Transparent penile tube (attaches to the vacuum unit) with the new easy-to-use Ring Ejector System. Used for the insertion of the penis to be pumped to a full erection. A sample of water soluble lubricating jelly. Many Vacuum Therapy users have reported incredible results by following the patented exercise technique with this device. Regular use of a Vacuum Therapy Device may help to open penile arteries and possibly restore them to their natural elasticity. This may allow these penile arteries to carry a more normal blood flow into the penis resulting in better rigidity. NOTE: Due to the nature of this product, we cannot accept returns after the Manufacturer's Seal is Broken.