Bosu Balance BallFitness Hero Bosu Balance Ball The Fitness Hero Bosu Balance Ball Balance Trainer is engineered to enhance balance and build core strength. With anti burst technology, this multipurpose device has added safety measures as it deflates gradually in case of puncture. Its reversible design provides both the option to use the inflated ball surface and the flat underside for a complete full body workout. Expand your fitness routine and achieve a total body