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 will 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. Snap-on latch and portable design: The plastic file box features a snap-on latch design that closes tightly to prevent items from falling out. Colour:Transparent-White Material:Plastic Size:About 31.8x24cm Package Contents: 4 * Portable Project Case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.