Feature:1. SPECIFICATIONS: A4 size music folder with 4 page expansion, allowing multiple pages of music to be unfolded and placed horizontally for easy viewing.2. FIRM CLAMPING: Transparent interlayer design on the inner page ensures that music files do not fall easily, making it easy to access and secure.3. WATERPROOF SHELL: This music folder has thickened and flexible shell with frosting process, waterproof and durable, wear and scratch resistant.4. WITH STEEL CLIPS: Equipped with 12 pieces of inner pages, using excellent steel clips to ensure secure clamping and easy disassembly at any time.5. HOLLOW DESIGN: There is no film in the middle of inner pages, which allows for easy drawing, modifying and labeling, convenient and practical.Specification:Item Type: Sheet Music FolderProduct Material: PPFunction: Music score modifying, detachable inner page, 4 page expansionApplication: Students, office workers, watching and reading music scoresSpecification: 52 Pages Capacity.Package List:12 x Inner Pages1 x Music Folder