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 Folder Product Material: PP Function: Music score modifying, detachable inner page, 4 page expansion Application: Students, office workers, watching and reading music scores Specification: 52 Pages Capacity. Package List: 12 x Inner Pages1 x Music Folder