Ideal for Photographs & Digital Prints ; Polypropylene Cover with Nylon Stitching 24 Pages Accommodates 48 Images ; pH Neutral Polypropylene Acid-Free Black Mounting Paper ; Archival Safe and Lignin-Free Moisture- and Dust-Resistant Top-Loading Clear Pages With a stylish nylon stitching and value price, the Art Profolio Evolution from ITOYA is the next big thing in art and photo storage! Along with its sibling, the Original Art Profolio, the Art Profolio Evolution is the only storage and presentation book of its kind. Completely, acid-free and PH-neutral through its polypropylene, PVC-free construction and quality crafted, acid-free black mounting paper, the Art Profolio Evolution is archival safe for all your art storage needs. Great for photographs and film. Top-loading, crystal clear polypropylene cover resists moisture and dust. The Art Profolio Evolution is available in all the same great sizes as the Original Art Profolio.