TOOB-XTOOB X are elastic tubes made of quality plastic, very safe and durable. Package includes 8 different colors: yellow, pink, orange, purple, green, dark blue, light blue and red ENTERTAINING AND EDUCATIONAL Play your imagination, create shapes, numbers and letters by joining each of these sensory tubes MULTI FUNCTION: In addition to the shapes to be created, the tubes will make a crisp and soothing sound when stretched, giving you hours of fun