C-Line Top Loading Clear Heavyweight Polypropylene Memory Book Page Protectors are perfect for scrap bookers using this format. Each page features a super-strong, clear binding edge to withstand heavy use. Memory Book Page Protectors offer you archival quality, acid-free protection in a premium quality sheet that won"t yellow, stick to photos or transfer ink. They fit 3-ring binders and most 2-post albums and contains no PVCs.