When it comes to document protection, these plastic binder 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. Each sleeve is sealed on two sides to allow easy access to documents, while the thin, lightweight design allows for easy portability when on the go. Your pages stay neat and presentable with the non-stick polypropylene material designed not to lift or transfer print. The specially designed Corner Lock fits snugly over the clear view front cover of the binder sleeve to ensure that your papers don't accidentally fall out. Each plastic binder sleeve is three-hole punched and ready for immediate use in most standard 3 ring binders. Predesigned binder templates and tools on Avery Design & Print Online provide easy customization of title pages. With these 3 ring binder sleeves, you've got a lock on well-protected and well-organized documents.