- Constructed from durable PVC, this book cover is dirt-proof, waterproof, and lightweight, ensuring long-lasting protection for your materials. - Available in two sizes: small inner dimensions of 15.5 x 11.5 cm and large inner dimensions of approximately 22 x 16 cm. Small book cover measures around 17.5 x 13 cm while the large is about 23.5 x 17.5 cm. Please measure your refill papers before purchase to ensure a proper fit. - Compatible with most notebooks, folders, scrapbooks, book covers, novels, and planners, making it a versatile choice for various uses. - The transparent design allows for easy visibility of your contents, making it ideal for students, children, teachers, and professionals alike. - Perfect for protecting textbooks from wear and tear, keeping planners organized and presentable, or safeguarding scrapbooks from spills and dirt. - Lightweight and easy to use, this book cover is designed for convenience, allowing you to quickly slip your materials in and out without hassle.