- EXPANDABLE SIGN TUBES: Designed to accommodate a variety of sign sizes, these tubes extend seamlessly from 19.69 inches to 35.43 inches, providing a versatile storage solution for your needs. - WATERPROOF CONSTRUCTION: Protect your panels with our waterproof expandable tubes. The design prevents bending during transport, while the light-resistant feature safeguards against sun fading, ensuring your materials remain in pristine condition. - EASY TO CARRY: Experience effortless transport with the adjustable shoulder strap, which enhances comfort and convenience. Ideal for artists, architects, and designers, these tubes make carrying your work a breeze. - VERSATILE USAGE: Streamline the storage and transportation of drawings, plans, maps, canvases, and documents. Our reliable expandable poster tube is perfect for professionals on the go, whether you're heading to a client meeting, an art show, or a project presentation.