High-Quality Material - 12-pack plastic pockets for A4 paper, made of polypropylene plastic, 6 different colors, 2 of each. Waterproof, tear-resistant, odorless, robust and durable, protecting files and office supplies well from damage. Expandable Poly Pockets for Large Capacity - Plastic pockets with an expandable design allow the sides of the pockets to expand up to 2 cm high, easily accommodating at least 200 sheets of A4 paper at a time and probably more. Multi-Hole Design on the Back - Fits most staplers and ring binders. Multi-hole design allows it to be used with most standard 2/3/4/11 ring binders and boxes. A4 plastic pockets are also open at the top for quick and easy access to documents. Practical Design Transparent Plastic Material - See the contents without opening, each label pocket with a label pocket and multiple colors and blank printable tabs to classify and identify your document. Button to keep contents secure. Versatile Use - A4 plastic pockets are suitable for daily use, keeping documents organized, portable for document storage, lightweight can be used in school, home, paperwork, office and business trips.