The smart wonder core is a revolutionary 6 in 1 fitness product designed to target your whole core. focusing on your upper, middle and lower abs, and your oblique's ! to give you the ultimate total body core shaping and toning work out! provides total body muscle toning and cardio in one compact system. allows you to target a variety of muscle groups, including your upper, middle and lower abs and obliques, thighs, gluts, calves, forearms, triceps and biceps. comp and portable. comes fully assembled, adjustable dual resistance. exercise dvd & fitness guide included.â