When it comes to document protection, these sleeves have it cornered. Corner Lock™ Document Sleeves give you all the protection of a traditional document sleeve with the added security of the Corner Lock™ feature. The durable plastic sleeves are sealed on two sides to allow easy access to documents while keeping them looking fresh and sharp. The special Corner Lock™ fits snugly over the clear front cover to ensure that your documents don't accidentally fall out. Three-hole punched to fit standard 3-ring binders. Predesigned templates and software on the Avery site provide easy customization of title pages. With these document sleeves, you've got a lock on well-protected and well-organized documents.