* Mr. Pen poster tube set comes with two tubes, each capable of extending from 25 inches to 40 inches, allowing for a custom fit to a variety of poster or document sizes. * Crafted from high-quality, durable materials, these tubes are designed to offer protection against physical damage, dust, and light water exposure, ensuring your contents stay safe during transport or storage. * Each tube features a twist-off cap with a secure locking mechanism to prevent accidental openings and ensure the contents remain intact. * Equipped with an adjustable shoulder strap, these tubes make carrying large documents or posters convenient and hands-free, suitable for professionals and students alike. * With 2 tubes included, this set provides an excellent value for anyone who needs to transport or store multiple items safely. The color variation between blue and black offers easy identification and organization.