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 -Sold in packs of 50 -Measures 7 1/2" x 10-1/2"