Features: A4 size music paper folder, a great assistant tool for players of guitar/violin/piano, etc. Can protect your music papers from wrinkling and keeping them in good order. Open style pocket design allows you to modify music score or document files easily. Total 40 pockets, large capacity; special contiguous page design, you can read 4 page music score at one time. PP outer shell, durable and attractive; metal rings connect the holder sheets, not easy to split away.