There are currently 3 FDA approved intragastric balloon systems: Orbera, Reshape, and Obalon. Orbera and ReShape are both placed endoscopically. Orbera is a single balloon, Re-Shape has a 2-balloon design. Both are indicated for obese individuals with a BMI of 30-40, though ReShape also requires 1 medical co-morbidity, such as high blood pressure, diabetes, or high cholesterol. Both balloon systems remain in place for 6 months, then are removed endoscopically. There are no head-to-head studies comparing the two systems, though in the US Pivotal trials, Orbera patients lost an average of 10.5% percent of their total body weight (about 22lbs) and ReShape patients lost 6.8% (14lbs). The third system, Obalon, is a swallowed balloon system. A total of 3 balloons are swallowed, then inflated with gas (not saline, like Orbera and Reshape) using a thin catheter. The balloons are swallowed over a period of 9-10 weeks, so that you can adjust to the total volume slowly. This equates to fewer side effects, particularly nausea. The balloons are then removed after 6 months. In the US Pivotal study, patients lost an average of 6.6% of their total body weight, or about 15lbs. Hope that helps!