Each card binder contains 30 pages and each page is double-sided (9 per side for a total of 18 pockets per page), holding up to 540 standard-sized cards. Compatible with a variety of cards. Zipper to secure binder when not in used. Waterproof hard-cover durable design to prevent exterior damage. Side loading pocket-design to prevent cards from falling out. All materials made from acid-free non-PVC material. FEATURES Product Size: 26cm x 35cm x 3cm Product Size: 10.3" x 13.8" x 1.2" Capacity: 540 card slots / 30 side-loading pages Zipper to secure binder when not in use Waterproof hard-cover durable design to prevent exterior damage Side-loading pocket design to prevent cards from falling out