Our zippered book sleeves are made of high quality polyester. Each book cover has its own unique graphic and themed design. They're fun, stylish, lightweight yet sturdy, and waterproof to better protect your books. Our book sleeve features a front open pocket for quick access to pens or small items. Whether you are a student, teacher, or a book lover, this book cover is the perfect accessory for you. It is also the best choice for you to give to your relatives, friends or colleagues.