Description
The object shown is a document storage tube, commonly used for safely carrying large papers such as maps, research posters, architectural drawings, or thesis materials. It is typically made of durable, lightweight plastic (PVC or polypropylene) and features a cylindrical, water-resistant design with a secure removable cap to protect documents from bending, moisture, and damage. Such tubes are widely used by students, researchers, architects, and artists for storing or transporting rolled documents. The black tube in the image appears to be a standard adjustable model, often available in telescopic form to accommodate various paper sizes (A3–A0). These tubes are practical and protective, ensuring the preservation of important academic or professional materials during travel or storage extendable 40 inches