Get the sculpted abs you've always wanted and increase your overall fitness level with the Bender Ball Mini Ab Ball and The Bender Method of Core Training. The Bender Ball comes complete with a 6- to 9-inch Bender Mini Ab Ball, the Bender Method Manual, and the Bender Method of Core Training video. Developed by master trainer Leslee Bender, the Bender Method and Mini Ab Ball gives you a workout that's up to 408 percent more effective than ordinary crunches. In the Bender Method, the combination of each ab sculpting move with the method of Selective Stabilization cranks up the intensity and targets the muscles you want from all sides--including your upper abs, the sides, and hard-to-reach lower abs. The Bender Ball Workout allows you to work your core in ways you can't do with standard crunches or large exercise balls. With a regular crunch on the floor, your motion is limited to going forward, not back. With the Bender Ball, you are able to get extension back and flexion forward, which works your muscles more effectively for faster and better results.