These file boxes are made of high-quality PP material, which is dust-proof, moisture-proof, flexible, strong load-bearing, not easy to deform, and easy to clean. File Storage Box External Dimensions: 12.52 x 9.45 x 0.94 inches. Internal dimensions: 12.2 x 8.9 x 0.71 inches. 4-Pack Portable Project Box: Your files and magazines stay organized and easy to find with our portable plastic file storage boxes. This prevents important documents from lost, wrinkled, or damaged, and helps keep your desk drawer tidy. WIDE APPLICATION: These plastic stackable storage boxes are perfect for magazines, photos, stamps, envelopes, invoices, tickets, papers, and children's cutouts and drawings. The portable project bag is suitable for home, office and school use, and is also very convenient to use when traveling. latch and portable design: The plastic file box features a latch design that closes tightly to prevent items from falling out. Colour:Transparent-White Material:Plastic Size:About 31.8x24cm