Keep important documents and paperwork safe and protected during storage or mailing with these tough tubes. The spiral-wound construction is designed to handle rough treatment during transport. Strong 3-ply spiral-wound construction protects blueprints posters and artwork from damage during shipment. Tubes seal with white plastic end caps (included) that snap into place and wonT pop off during transport. Reusable design accommodates future shipments. Size indicates usable space (actual tube lengths are greater). Contains Recycled Content - See Specs for Details