Switch on these balls and twirl them for some dazzling multicolor fun, or hang them up to create a pair of cool color-changing lamps! Change the color mode just by pressing the button on the string. You can have them as just a single color, change colors, or a dazzling rainbow! They are made of soft, durable plastic to prevent injury while twirling them around and have finger straps for a sturdy grip. Great for sensory rooms, gross motor skill improvement, dancing, celebrations, and more! Requires 3 LR44 batteries (included).