Brodart Just-a-Fold III Archival Book Jacket Covers COMBO PACK - 2 10 yard rolls - 10" & 12" (1) 10" x 10 Yard Roll AND (1) 12" x 10 Yard Roll Archival Quality Just-a-Fold III Book Jacket Covers - Allows you to cut to Your Specifications Super Clear allows DJ Brilliance to show through and Prevents books from sticking together on the shelves pH neutral PVA Adhesive and Chemically stable 1.5 mil thickness polyester Rolls Bottom Loading - Allows flexibility with different size book jackets. Can be folded several inches smaller than stated size Paper backing with perforated folding lines for ease in fitting and added protection