Sturdy Telescoping Artists Tube - This art tube measures 24 inches long and has a diameter of 3 inches. The tube has its own shoulder strap, so that you can carry it easily. The art tube is sturdy molded plastic with a twist open top that snaps closed, and it telescopes out to a maximum length of 36 inches! There are slots along the telescopic section, so that you can snap the tube closed at different lengths to suit the size artwork that you are putting inside. This is an extremely versatile and sturdy tube; ideal for class and workshop use, college courses, or for carrying your plein air art supplies.