Music Folder: Used to store music notes, documents, etc., music folders, music notes, A4-size paper with 30 compartments. Material: The inner pockets are non-slip and transparent with high-quality polypropylene (PP). The spiral binding allows the folder to be opened at a 180-degree angle for flat music notes. Waterproof and thick pockets: The inner pockets are non-slip and transparent, and the concave-convex technology can reduce reflected light to ensure that your music notes do not get wet during practice. Perfect for: Suitable for daily filing and saving of A4-size and smaller than A4 documents, widely used in offices, schools and homes. Works equally well on piano, organ or performance synthesizer. Easy to use: choir and piano notes and other papers can be inserted. A standard display book that can be easily inserted and taken out of music notes or music files. Product Description Music Holder, Versatile Paper Document Folder Music Holder Organization Folder Features: 1. Material - High quality polypropylene (PP) material which is lightweight, durable, waterproof and can protect documents for a long time. 2. The spiral binding allows the folder to open at a 180 degree angle for flat sheet music. The folder will not automatically close on a sheet music stand. This allows for easy and accurate page turning. 3. Can be used to store documents, music notes, picture sketches, etc. Suitable for daily filing and storage of documents; A4 size and smaller than A4. 4. The inner plastic pockets are thick and transparent, and the concave-convex technology can reduce reflected light, making your music notes or document files safer. 5. Standard View Book - The clear bands are sealed on the outer edge. Even if the folder is upside down, your notes will not fall out. 6. An excellent assistant for instrument players, musicians, students, office workers, etc. Design for office, school and home. Sheet clearly visible without light reflection. Specification: Material: high quality polypropylene (PP) Color: black Size: A4 / 31.5cm x 24cm Bags: 30 bags Package: 1 piece Music Holder / Concert Choir Folder