IDEAL FOR ALL BOOKS: Stretchable! Fits most jumbo textbooks up to approximately 6.5" x 8.9" x 0.8" (16.5cm x 22.5cm x 2cm) to 7.3" x 9.5" x 1.2" (18.5cm x 24cm x 3cm). PACKAGE: Each book cover has an independent OPP bag, with 2 free pack sticker labels to categorize your book well. PROTECT: These durable book cover can protect your book safe from scratches, bumps, wear and tear. Keep your book clean and protected. REUSABLE AND WASHABLE: Made from high stretch fabric for prolonged durability and slip free! It can be used for a long time. MANUFACTURER MINIMUM AGE: Ages Over 36 months. Please note that these book covers are for ages 3+! ! !