HOW TO PLAYIt consists of two spheres connected in series by a rope, players can play by making the spheres knock against each other and making rustling sounds when swinging the spheres through the swinging motion of the arms. PLAY WHILE EXERCISINGRhythm hand play that combines hand percussion/juggling skills/visual fancy effects has the effect of exercising upper limb coordination and developing intelligence. SCOPE OF APPLICATIONThese rhythmic balls are suitable for music lovers, adults, children, drummers, church groups, percussion ensembles and even educational games. COMFORTABLE AND SMOOTHComfortable handle, bright surface, comfortable and smooth, 5 cm diameter sphere, flexible and easy to handle, suitable for all kinds of hand. DURABLE TO USEThe rhythmic ball is made of ABS material, containing small iron sand, and the rope is made of climbing rope, which is not easy to break and durable. Specification: Material: iron sand(inner)+ABS+climbing rope Color: black+yellow+red Ball diameter(approx): 5cm/1.97inch Total length(approx): 25cm/9.84inch, adjustable Package: 2 pcs x Aslatuas rhythmic ball Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.