Document Tube,Plastic Expanding Poster/Art/Document Storage Tube 24.5 to 40 inches Adjustable with Carrying Strap Waterproof and Light-resistance Telescoping Carrying Case (Black) Expandable Storage TubeThe storage tube could expand from 24.5" up to 40" and the diameter is 3.12, so handle various poster dimensions. Unlimited Use: The plastic tube could be used to storage and travel posters, blue prints, maps, documents, large photo prints, drawings, artwork, arrows, fishing rods, drum sticks, or whatever else you can imagine. Unique Lock Design: Twist it according to the arrow direction, can easily and firmly lock your favorite poster in the tube case safely. Removable transparent cover to lid lets you add identification or labeling to the tube. Strong and Lightweight: Poster Tube is made of rigid plastic to protect contents from bending or creasing in transit. The document tube is also waterproof and light-resistant, protects documents against fading from exposure to sun light. Adjustable Belt: The Carrying case has an extra long shoulder strap that is comfortable for use even when the tube is fully extended.