Constructed with archival quality paper and plastic, that is Archival, Photo Safe: Acid, Lignin and PVC Free. The inserts easily slide out of post-bound seamless sheet protectors. Digital or conventional images can also be transferred by printer or copier to these inserts. This memory book is screw post bound and accepts unlimited refills RMW5PN. Screw Post Binding System Allows Pages to Lie Flat. 12x12 Top Loading Memory Scrapbook Contains 20 Top Loading Pages (10 Heavy Paper Inserts & 10 Top Loading Protectors). Washable, Durable Cover with Expanding Library Spine Accepts Unlimited Refill Pages. Top Loading, Seamless Clear Polypropelene Protectors. Heavy Paper Inserts for Photo Mounting, Digital Printing, Copying or Scrapbooking. Inserts Easily Slide Out While Protectors Stay in Album. Plastic Screw Post Reinforcers Included.