How does this breast enlargement system work? Like any tissue in the body, when it is exercised and blood flow is encouraged, it will enlarge. This super effective breast enlargement system will result in firmer and fuller breasts, as many persons who use this breast enlargement pump find. Also, regular stimulation of the breast tissue signals the pituitary gland to increase the production and release of the female hormones responsible for breast growth. Then, by gently stretching breast tissue repeatedly the breasts are said to respond by soft tissue expansion. Each pump applies vacuum to both breasts simultaneously. This is an easy to use breast enlargement system that fits snugly over both breasts, has double vacuum cups for simultaneous even enlargement and it features a quick release pressure valve system giving you maximum control and allowing for easy removal. One size fits all and the pump is made in a very comfortable vinyl material. Pump away and watch your breasts grow before your eyes! Please note box is for display purposes only and may come in a plain box.