Quality equipment and quality training. These balls are the real deal. If you’re serious about your training, want quality equipment, and want to use an exercise ball for advanced training, this is the one you want. AOK Duraball or Mediball. These are legit anti-burst quality exercise balls. You could stand on these... safely. You could use them for strength training dumbbell presses. They’re brilliant for core work as well. The key is that they’re 1) anti-burst, and 2) won’t deform under pressu