Made of Archival Polyester (Mylar) Fits playbills and mini posters 2 mil material thickness 1-1/2" flap for closure
Exterior Dimensions: 11 1/2 x 17 3/8

These 2 mil 11 x 17 Art Poster Bags are made of Archival Polyester (Mylar ) an inert material of the highest clarity. 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.