The Studio Calico - 9x12 Page Protector Multipack with different designs. 100% Archival and Acid Free. They fit the Studio Calico - 9x12 Scrapbook Album what is sold seperately. The package includes 9 pack of page protectors. 2 each of: 1B (9x12 pocket), 2B (3x3 pockets), 4B (3x4 pockets) and 3 of 3B (3x4 - 4x6 pockets).