US Art Supply® Affordable Silver Plastic Telescoping Document Poster Tube with 3-1/8 diameter that expands from 25 up to 40 3/4 is ideal for artists architects and poster collectors. Poster Tube is made of a very rigid plastic to protect contents from bending or creasing in transit. Tube is also water and light resistant it protects materials against fading from exposure to sun light. Now includes an Extra Long Shoulder Strap that is comfortable for use even when the tube is fully extended. Storage tube has unlimited uses such as storage for: posters blue prints maps documents large photo prints drawings artwork arrows fishing rods drum sticks or whatever else you can imagine.