These 2 mil Comic Book 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. Resistance to moisture, insect attack, fungus, mold, mildew, acid, oils, grease, and solvents. Mylar contains no dangerous plasticizers, slip additives, surface coatings, antioxidants, acid hydrolysis. This bag is a semi rigid bag and does not require the use of a backer board. But if you do use a backer board be sure to only use certified acid free boards.
This item is eligible for free returns within 30 days of delivery. See our returns policy for further details.