SET OF 1 RANDOM COLOR - These plastic tubes have an accordion pattern that allows them to be pulled apart and pushed back in over and over. When you pull the tube apart it gets very long! These tubes glow in the dark! Tubes are 8" long and 1" when contracted. They expand up to 26" long when fully expanded. These colorful tubes are a fun, open-ended and interactive toy for children. The tubes pop open and are flexible. Kids can stretch, bend and build with them in a variety of ways. These tubes provide auditory stimulation because they make a popping and cracking sound when they are expanded and contracted. They can also be used as a song tube if you remove the head and tail and swing them above your head. Perfect toy for occupational therapists and those working with kids with developmental delays. Pulling the tubes apart and pushing them back together are great for fine motor skills and bilateral coordination.