This Prostand set provides a complete protective solution for 5th grade Russian school textbooks, helping you keep your learning materials in great condition throughout the academic year. The kit includes nine covers made from transparent protective plastic that shields pages and bindings from dirt, moisture, and general wear without hiding the book's original design. You will find two different sizes within the package to accommodate various textbook dimensions: four larger covers measuring 262x425 mm and five slightly smaller ones at 245x357 mm. These are designed for students who want a simple way to ensure their books remain clean and intact during daily transport in a backpack.