Snap-able tubes make a popping sound as they are flexed back and forth. The Pop Toob can be popped, stretched, bent, and connected together. Spin 'em for a whistling noise!Connect 'em together!Bend 'emStretch 'em: Each 7 inch tube can expand up to 4 times its length! Provides tactile stimulation, fine motor skills and auditory feedback. Even better when used for hours of fun!  Comes in an assortment of 4 Bright Colors of green, blue, red or purple. Your set of 4 will be assorted colors selected from our in stock supply.Proudly made in the USA!Ages 5 and up