Depending on current inventory the artwork is printed on one of 2 papers: *Kodak Endura professional photo paper (High Gloss). This is superb in quality and acid free with archival inks. *Chemically processed on light-sensitive matte photo paper. These are archival art prints superb in quality and acid free. They will last over 200 years when taken care of. Prints come in a clear bag with board backing to ensure longevity.