Our 2 mil Magazine Sleeves are made of Archival Polyester (Mylar) an inert material of the highest clarity. We use DuPont inert Melinex® or a suitable equivalent. Polyester (Mylar) will not discolor, damage, or adhere to items placed inside it. It is a sturdy film that beautifully displays, timelessly protects, and gives extra support to fragile documents. Our polyester material has passed the Photo Activity Test (PAT) that confirms that this material is safe for long-term storage.

We have two  styles of 4 mil Magazine Sleeves that we manufacture. They are both made of the same Archival Polyester material as the 2 mil sleeves.  However 4 mil material is much sturdier than the 2 mil and offers greater protection from possible creases, bent corners, and crushed edges.  The 4 mil sleeves have two different flap styles. The Open Flap style (ROF) has to be creased to form the flap and then folded over. The Beaded Flap style (BOF) has a third piece of polyester that is bead welded to the extended back of the sleeve, creating the flap.