How to Use- The book cover is transparent and has a self- adhesive seal on one side, which can be adjusted to suit books of different thicknesses. Simply slide the book cover into the two cover flaps, then remove the adhesive film and stick it in the correct position on the book. Clear Book Covers- 16K size is suitable for 19* 26cm books, durable, reusable and waterproof. sticky back book covering Safe and Durable- Made of high- quality polypropylene, an excellent paper sleeve for adhesives. Transparent Cover For Books- The paper film is for saving recipes, photos, important documents, and certificates. The page protector prevents them from wearing out. Book Wrapper- Helps you protect exercise books, folders, school bags and books from dust, dirt, moisture, bending, tearing, and folding ears.