These are premium pages for storing and displaying your collectible cards, photos, or documents. Each page has 9 pockets arranged in a 3x3 grid, and they're the 'sideloading' type, meaning you slide your cards in from the side. This is often preferred because it's more secure and dust-resistant than top-loading pages. They're made from extra-clear, archival-safe polypropylene using ultrasonic welding (no glue, so they won't get sticky over time). The plastic is nice and stiff to protect your items. This listing is for a pack of 50 sheets. They fit perfectly into standard 3-ring binders. Whether you're organizing sports cards, trading cards, photos, or important papers, these high-quality pages will keep them safe and visible.