Protect your valuable books from dust, spills, and wear with this Self-Adhesive Transparent Book Cover Film. This 30-piece set includes three different sizes (10 pieces each), making it perfect for textbooks, notebooks, office files, and important documents. Crafted from high-quality waterproof material, this book cover film offers long-lasting protection while maintaining a clean, transparent finish. The self-adhesive backing ensures an easy, bubble-free application, eliminating the need for glue or tape. The strong adhesion keeps covers secure, preventing peeling or lifting over time. Ideal for students, teachers, librarians, and office professionals, this versatile bookbinding cover helps maintain the original look of books while extending their lifespan. Whether used at school, home, or the workplace, these protective covers are a must-have for book lovers and organizers.