Size: Book sleeve fits up to 18.5 x 9 inches (470 x 230mm). Actual size may vary slightly; refer to product images for details. Stretchable Book Cover: Made from durable polyester elastic fabric, these large book covers are washable, reusable, and provide long-lasting protection. High-quality stitching ensures resistance to tearing and fading, offering reliable coverage over time. Black Book Cover: Features a sleek black color with a clear, vivid pattern that enhances visual appeal and helps identify your book quickly. The elegant design combines style with functionality. Easy To Install: Simply stretch the cover over your bookno measuring, cutting, taping, or gluing required. The snug fit protects against bumps, scratches, wear, and tears. Widely Used: Ideal for protecting books, textbooks, and notebooks. Perfect for students, teachers, or anyone who wants to keep books in good condition and easily distinguish them.