These ATC 3 Hole 9 Pocket Page Protectors hold up to 18 - 2 1/2 in. x 3 1/2 in. trading cards per page. These are HEAVY WEIGHT VINYL page protectors unlike some other ATC page protectors out there. You'll see what I mean once you receive these. This pack of 10 Artist Trading Card page protectors could hold 180 ATCs, 2 ATCs per pocket back to back. They are an acid-free archival product that is designed to protect, store and display your artist trading cards. This product features high clarity heavyweight polypropylene, and are top loading pockets with strong welds. They fit all standard 3-ring binders and albums. Features UV Protection and no PVC.