These are the same pages 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. Build your own custom, deluxe mint sheet album by combining these pages with a Supersafe Mint Sheet Binder. Sold in packs of 12 pages.