Premium QualityThe A4 document folders are made of PP film, which is non-toxic, eco-friendly and recyclable. It is waterproof and tear resistant. Improved single-layer thickness, 0.18mm, thicker than the products on the market. The edge uses the latest embossing technology, which is not easy to tear. Transparent design + color classification Clear design keeps contents visible and makes it easy to find documents without having to open your pockets. Indeed, different colors and labels are convenient to distinguish and darken different files, greatly improve work and learning efficiency. Multiple UseA4 briefcase is very suitable for daily use. Lightweight and easy to carry. A great document organizer for school, work, home and business trips. Can be used to store documents, receipts, textbooks, stationery, passports, small assembled toys, etc. Keep your items organized and you'll look neater.