Our Polyester (Mylar) Photo Sleeves are made from crystal-clear archival polyester, approved by the Library of Congress.  We use DuPont inert Melinex® or a suitable equivalent. The material we use for our sleeves has passed the Photo Activity Test, which certifies that the material is safe for long-term storage

We manufacture three different styles of photos sleeves:

Polyester Photo L-Sleeves	Polyester Standard Photo Sleeves - No flap	Polyester Tuck-Lock Photo Sleeves