Preserve and protect photos from fingerprints spills deterioration and discoloration. Pages feature stainless steel staple hinges and are acid and lignin free. Top loading protectors feature stainless steel staple hinges are easy loading super clear acid free and can be used with any 8-1/2 X 11 page. Slip-on pages can be used with hinged pages or any 8-1/2 X 11 pages and are super clear and acid free.