Features: Glare plastic sheet protectors optimal visibility of musical scores under any lighting, eliminating glare issues common with traditional paper sheets. Features 20 sized refillable pages with a binder mechanism, allowing effortless addition/removal of sheets to customize your music collection. Designed for music teachers, students, and performers needing organized, portable for frequently updated sheet music and practice materials. Ideal for stage rehearsals, classroom lessons, or outdoor performances where glare readability and quick page modifications matter most. conscious musicians will appreciate the recyclable plastic construction offering tear resistant while reducing environmental compared to alternatives. Specifications: Stuff: Plastic, -reflective design, ensuring that the piano score can be read clearly under various light conditions. Size: Suitable for paper, 20 page capacity, providing ample storage space. attributes: Transparent insert design, content can be changed and modified at any time, convenient and practical. Package Includes: Transparent insertion score folder × 1 (20 pages, size, -reflective, can modify design) note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.