The Prostand protective cover set is designed to keep school textbooks for grades 5-7 in good condition throughout the academic year. Made from durable PVC, these covers shield books from moisture, dirt, and general wear, ensuring that the pages and bindings remain intact despite daily use in a backpack. This set includes seven covers in two different sizes to accommodate various book dimensions. You will find four pieces measuring 269 x 480 mm and three pieces measuring 247 x 445 mm, providing a practical solution for students who need to protect multiple subjects with a single purchase.