Resealable bag accomodates Golden Age comic books published in the 40s and 50s in the 7.125 to 7.5 x 10.25 inch size range. Many comic books printed from the 1940s and 50s, and some through the early 1960s work with this bag. 2 mil ultra clear polypropylene Resealable strip on body of bagAccommodation range from 7.125 to 7.5 x 10 1/8 sizesInterior size is 7.75 x 10.5Polypropylene is an inert, stable, PVC-Free materialIdeal protections against dust and moisture during handling and storage100 per pack !