The Supersafe Mint Sheet Files includes the same pages that are included in the Supersafe Mint Sheet Album. They are patent-pending three-layered pages that sandwich a sheet of richly textured jet black archival polypropolene film between two layers of archival crystal clear polypropolene film. No noxious PVC, acetate or black-dyed paper inserts can ever touch your valuable mint sheets. The Supersafe Mint Sheet File is available with either 12 or 16 pages and each page holds two sheets for total capacity of 24 or 32. The pages are bound into a strong but flexibility blue cover.