Enjoy all the security an archival quality box provides, along with the presentation qualities an album offers. A 1.5'' plated steel O-Ring mechanism secures whichever standard size pages you choose to include. preserve photographs, negatives, slides or documents. A Velcro lock tab secures binder covers together for additional security during storage or transport. The tan boxboard offers acid-free and lignin-free preservation form the elements, and is buffered with a 3% calcium carbonate buffer for added preservation.