Be ready to work your legs on Wham-O’s new Superball® Topsy-Turvy! Made from compressed foam, its central mass is distributed unevenly within the sphere. This unique property of Topsy-Turvy makes its rebound path completely unpredictable, which makes it the perfect item for kids to expend their unending energy or for just the average Joe trying to improve his reflexes! Whether you are playing with your friends, family or just alone by yourself, the Topsy-Turvy ensures hours of fun at a time! Superball® Topsy-Turvy is available in a case pack of 16 pieces with an assortment of two different graphics.