PP, can be recycled and eco-friendly that won't lift or smear ink from your pages, the lightweight material offers everyday protection and comfortable portability. Stores and protects A4 size documents, completely Transparent and clear, which is convenient for viewing. The box of 100 sheet protectors nicely accommodates small and larger projects alike. Each protector holds one sheet of paper, prevent paper from easily folding or creasing, and help you to keep a variety of important documents safely stored and professionally displayed. Its perfect for office, home and school use, and for business proposals and school reports to reference manuals or special-event organizers. 11 Holes - Can fit most sizes of ring binder, easy access and prevents inserts from falling out.