With Carrying Strap: these expanding document tubes are equipped with adjustable carrying straps, fitting the length of the poster tube and your personal needs, allowing you to easily carry these tubes with your document inside, while releasing your hands for other things Telescoping Design: these poster carrying tubes are telescoping that can be adjusted to fit different lengths of posters, you just need adjust the length and rotate back to fix, they can be adjusted from 24.5 inches to 40 inches in length, 3.4 inches in diameter Safe to Store Document: these storage tubes for blueprints are made of plastic material, which are waterproof, can protect your document or other paper products from getting damaged or wet, bringing much convenience to you in rainy days or traveling Ideal Gifts for: these plastic storage art tubes are ideal gifts for students majoring in art, painting, architecture and so on, art teachers, architects, designers, artists, as well as office worker, etc., which will be practical for them to carry their documents Wide Applications: these tube storage containers are suitable for various paper products, such as artwork, poster, blueprints, maps, paper rolls, documents, floor plans, scrolls, sketch paper, architect paper, and other things need to be rolled