Students use Bouncybands for Chairs to bounce their feet to release their extra energy, anxiety, and frustration in class while they work quietly. The loops on the heavy-duty Bouncybands rest inside the groove at the top of each support pipes so it doesn't slide down to the floor when being used. Made in the USA. Latex-free. The heavy-duty Bouncyband is 13" long and stretches to fit chairs that are up to 17" wide. The support pipes are 4" tall and have an inside diameter of 1.5".