It is a small product with great fun. Grip The handles with both hands try to keep the ball running by repeatedly opening/ closing the tracks. It can improve hand-eye coordination, physical, concentration and patience. Key features. Grip The handles with both hands. Try to keep the ball running by repeatedly opening closing the tracks. How to play:- hold the handles. Practice to fold & unfold infinity loop. Place the ball on to the track. Try not to drop the ball while folding & unfolding.