Specification High Quality Material: This art portfolio binder is made of high quality PP material, safety, waterproof, not easy to deform and comfortable hand feeling. Spiral Design for Easy Page Turning: With the spiral binding that allows 360 rotation, you can easily change your presentation book access. Ample Storage Space: With 50 A4 clear plastic sleeves, this presentation binder can display up to 100 viewable pages of A4 letter size or smaller. Thickened Plastic Sleeves: The inner sheet protectors are thicker than market folders and less likely to tear or break. Clear folder inner pocket does not stick, making it easy to put in and take out the paper, while allowing you to see the documents inside at a glance. Wide Application: This portfolio folder is suitable for document sorting, storage, and display in the office, school, and home. It's also great for storing artworks, sheet music, rhinestone drawings, and certificates, making it an ideal gift for colleagues, children, or yourself.