the gastric sleeve is surgery that removes 2/3 or more of the stomach,leaving a long tube like smaller stomach. there are several advantages and disavantages. there are no fills, no slipage or erosion with the sleeve, however it cannot be reversed. You can contact any of the sponsora on Lap Band Talk and they will send you information, you can even watch the surgery on you tube. I am having mine on July 4th in Mexico.