Custom portfolio for a collection of invitations. This portfolio design is made to look more like a book and less like an album (see one of our classic archival albums here: https://www.elbel-libro.com/archival-albums). It has the same excellent archival qualities, with the document in contact only with Melinex (archival polyester) and acid-free Japanese tissue, and easier access to the documents thanks to the Melinex pockets being open at the fore-edge.