The BCW Golden Age Comic Bags are an acid free, archival quality product made of crystal clear polypropylene. Use this item to protect and store your collectible golden comics. Available in two sizes so you can now fit your thickest golden comics into the appropriate bag. Holds most golden comics. Acid-free, safe storage. Wider bag fits annuals and 80-page giants. Use with BCW Golden Backing Boards. 100 Bags per Pack. Exterior Dimensions: 8″ x 10 1/2″.