MicroChamber Paper Standard Size 100 Sheets 6-1/2" x 10-1/8" . Protect Your Collectibles from the Effects of Aging. Bring and entirely new level of Protection to your comics. This paper is a thin, pure white, 100% cotton paper and is approximately one half the thickness of a sheet of bond paper (0025-.0028 in., 65g/m2). Microchamber Interleaving paper can be used with all collections, whether paper-based or photographic. Comic book paper is made from tree pulp. A tree's cellulose material, LIGNIN, turns the paper into ACID over time. Most people know that a bag will help protect a comic but don't know why. Exposure to open air greatly accelerates acid decomposition, but even with the best bags money can buy (mylars), your comics will still turn yellow then brown and eventually crumble into tiny brittle shards that disentegrate into the wind, completing the cycle of life by fertilizing the growth of new trees. It's a tragic love story. Acid loves your comics so much that it destroys them so no one else can have them. You can prolong the life and current condition of your comics by absorbing acid and other byproducts of decomposition, and prevent acid migration by using MICROCHAMABER PAPER. Place one sheet between the front cover and first page, one sheet between the back cover and last pages plus one sheet in the middle of the book. Microchamber Interleaving Paper with SPZ zeolite is the only technology designed for absorbing acid from paper.