These can be pulled and stretched. They create a popping sound when compressed and a wooing sound when stretched and twirled so the kids are constantly playing with them. They can also create different shapes as well as connect them to create a very long tube. The pipe tube toys are a great way to improve kids’ dexterity and improve their bilateral coordination. These are ideal for kids with autism, ADHD, ADD, and other sensory processing disorder. These are also perfect for occupational therapy. This help enhance your little ones’ fine motor skills and encourages creative play. THESE ARE HIGHLY DURABLE and can withstand hours and hours of bending and stretching. The colors do not peel off and the tube is smooth for the young ones’ hands.