These ComicArt Presentation Books are archival quality. Excellent for carrying and presenting original comic artwork, photos, and prints. The covers are made from durable 60 pt. polypropylene with stitched nylon fabric edges. Each book has twenty-four 1.5 mil polyester, double-sided pages (48 views), and 100% acid-free, black, 4.5 mil polyester inserts. Books are water- and stain-resistant.