The Champion Sports Swing Ball Set offers a fun cardio exercise for kids and adults that can be played alone or competitively in a group. Simply slip your foot through the ring and start swinging the corded ball with your ankle; the aim is to keep jumping over the ball and cord without missing a jump or stepping on the cord. Made of durable plastic, this set of six swing balls is easy to use, clean and maintain. Color(s): Assorted; Color Family: Multicolor; Color Assortment: Blue; Green; Orange; Purple; Red; Yellow; Diameter: 5.5".