1. Material: plastic 2. A4 size, can hold multiple types of documents/test papers 3. Hot-pressed edge sealing, not easy to crack, long service life 4. Highly transparent material, waterproof and dustproof, protecting built-in files 5. High-quality concealed buckle, stable opening and closing, thickened plate 6. Suitable for multiple scenarios 7. Tough in bending and not easy to leave creases 8. Dimensions: 32.5x23cm
