Music folders: can store sheet music, documents, etc., music folders, treble clef A4 paper with 30 compartments. Material: the inner pockets are non-slip and transparent with high-quality polypropylene (PP). Spiral binding allows you to open the folder at a 180 degree angle for flat notes. WATERPROOF AND THICK POCKETS: The inner pockets are non-slip and transparent, and the concave convex technology can reduce the reflected light to ensure your treble clef does not get wet when practicing. Perfect for: suitable for daily filing and storing of A4 documents and less than A4, widely used in office, school and household. Works equally on piano, organ or performance synthesizer. Easy to operate: choir and piano notes and other papers can be inserted. A standard display book that can be easily inserted and removed from the sheet music or files. Music holder, multi-purpose paper sheet document file music holder organiser folder Functions: 1. Material - High-quality polypropylene (PP) material, which is lightweight and durable as well as waterproof and is able to protect documents in the long term. 2. The spiral binding allows you to open the folder at a 180 degree angle for flat notes. The folder does not automatically close on a music stand. This allows for easy and accurate turning. 3. Can be used to store documents, notes, picture sketches, etc. Suitable for daily filing and storing documents; A4 size and smaller than A4. 4. The inner plastic pockets are thick and transparent, and the concave convex technology can reduce the reflected light, make your music score or document files safer. 5. Standard Display Book - The clear tapes are sealed on the outer edge. Even if the folder is turned over, your notes will not fall out. 6. A great 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). Colour: black. Size: A4 / 31.5cm x 24cm Pockets: 30 pockets. Package: 1 x music holder/concert choral folder Music holder, multi-purpose paper sheet document file music holder organiser folder Functions: 1. Material - High-quality polypropylene (PP) material, which is lightweight and durable as well as waterproof and is able to protect documents in the long term. 2. The spiral binding allows you to open the folder at a 180 degree angle for flat notes. The folder does not automatically close on a music stand. This allows for easy and accurate turning. 3. Can be used to store documents, notes, picture sketches, etc. Suitable for daily filing and storing documents; A4 size and smaller than A4. 4. The inner plastic pockets are thick and transparent, and the concave convex technology can reduce the reflected light, make your music score or document files safer. 5. Standard Display Book - The clear tapes are sealed on the outer edge. Even if the folder is turned over, your notes will not fall out. 6. A great 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). Colour: black. Size: A4 / 31.5cm x 24cm Pockets: 30 pockets. Package: 1 x music holder/concert choral folder