1. Rounded corners do not hurt the hands and are easy to move 2. Multi-layer classification is easy to find and not easy to confuse 3. The bottom is raised for stable placement and anti-dumping 4. Use in multiple scenes: suitable for storage in offices, study rooms, children's rooms, bedrooms, etc. 5. Layered storage, easy to classify and easy to find Reasonable storage of various books Transparent PET multi-layer book stands help you store and keep books neatly Colour:Transparent&White Material:plastic Package Contents: 1 x A4 File Display Clear Storage Box 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.