These durable and flexible polyethylene 11-inch by 17-inch report covers are lightweight for easy travel, yet strong enough for heavy daily use. Documents are securely held with 2 metal prongs and slide bar locks to keep materials in place. The binders accommodate standard 3-hole punched paper. With this multicolor pack, you can create an efficient system for organizing particular types of company documents, such as schematics and charts, ledgers and drawings.