The choice of museums for clarity and support L-Velopes are manufactured from archival quality crystal clear polyester. Protect your photos, ephemera, maps and documents safely and easily between sheets of archival polyester using no adhesives. These self-sealing L-Velopes support their contents and protect them from stress, dirt, fingerprints and atmospheric pollutants. Great for temporary display, or items that need to be handled frequently. Self-sealing L-Velopes are easy to use; two adjacent sides open so sheet slips safely in, then flaps fold over to make a seal. The process is just as easily reversible with no damage to contents.