Portable Telescopig Document Tube: Telescoping storage tube could extend from 17.7inch to 28.4 inch in length, and the diameter is 2.76inch, almost handle various poster dimensions. Material: This poster tube is made of PE plastic to contents from bending or creasing in transit. Adjustable Shoulder Strap: The adjustable shoulder strap makes it easy for anyone to carry. Waterproof and Lightproof: Cover twists and locks in place, making the tube almost completely water and light resistant. Great for artists, illustrators, drafters, architects, etc. Perfect for storing paper, tracing paper, maps, canvas and posters. Specification: Material: PE Color: Black Red Size Chart: Size: approx. 45x7cm/17.7x2.76inch, expands up to 72cm/28.4inch Package Includes: 1 Piece Plastic Storage Tube Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.