Wonder Core Smart Fitness Equipment, is a fitness breakthrough that might put you on your way to a stronger core and shredded abs. Whether you are looking to strengthen for a sport or tone for bikini season, this item is sure to impress. The Wonder Core Max exercise system is designed to provide a laser focus on your upper, middle and lower abs and oblique muscles for a well-rounded workout you will feel all over. It is a fitness accessory that no athlete should be without.