Feature: 1. PORTABLE SHOULDER STRAP: The adjustable shoulder strap makes it easy for anyone to carry this poster transport tube, which is very flexible and convenient for different ages 2. SAFETY PROTECTING: Expandable poster storage mailing tube adopts circular prevent knock, adopts engineering principle, greatly protects the drawing paper, and is placed more at ease 3. APPLICABLE SCENARIO: This retractable file carrier allow your posters, artwork, fishing rods and documents to become curved without creases 4. PRACTICAL GIFT: Give this storage tube to the drafters in your life, give them a practical, memorable gift, ideal for any artist, architect, drafter, or engineer. 5. PRACTICAL FOR OUTDOORS: Water proof, hard and long lasting storage tube for peace of mind when traveling with valuable documents or artwork Specification: Item Type: Expandable Poster Storage Mailing Tube Material: PVC Package List: 1 x Poster Tube