Features: PREMIUM QUALITY. Made of high-quality PVC material, dirt-proof, waterproof, lightweight and durable, easy to clean. SIZE. A6 inner core type is 15.5x11.5cm/6.1x4.53in, A5 inner core type is about 22x16cm/8.66x6.3in, A6 book sleeve type is about 24.5x16.7cm/9.65x6.57in, A5 book sleeve type is about 23.5x17.5cm/9.25x6.89in. WARM TIP: Please measure refill paper before purchase! MULTI-FUNCTIONAL. Fits for most A6/A5 binders, loose-leaf notebooks, binder scrapbook, book cover, novels, planners, etc. TRANSPARENT COVER. The transparent book sleeve design makes it easy to see. Great choice for students, children, teachers, office women and men, etc. ALL DIRECTION PROTECTION. Keep the book, notes well-organized in the school bag, handbag, suitcase all the time. Perfectly protect your notebook, novels, planners, memo book, etc from being scratched, broken, wet. Specifications: Material: PVC Color: Transparent Type: A6 inner core type, A5 inner core type, A6 book sleeve type, A5 book sleeve type A6 inner core type: Approx. 15.5x11.5cm/6.1x4.53in A5 inner core type: Approx. 22x16cm/8.66x6.3in A6 book sleeve type: Approx. 24.5x16.7cm/9.65x6.57in A5 book sleeve type: Approx. 23.5x17.5cm/9.25x6.89in Weight: Approx. 15g Note: 1. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Piece Transparent PVC Book Cover