Archives Golden Age 4-Mil Thick Comic Mylar Sleeves 8" x 10 1/2" Plus Two 7/8" Non-Foldable Flaps These bags with their trademark 'S'-shaped flaps, 'ease-in' comics, holding them tightly to protect edges and corners. Made from pure 4-Mil thick Mylar with two 7/8" non-foldable flaps. Resistant to aging, decomposition, moisture, oxygen, and gas penetration. Not affected by fungus, mold, or mildew. Immune to insect and rodent attack. Sold in packs of 50. Measures 8" x 10-1/2".