Check the listing for details. 100 E. Gerber Current Mylites+ & 24 PT Half-Backs 700M+ 675HB. Color: White, Condition: New. Listed at 47.99 USD. This Auction contains: 1 sealed bag containing 100 E. Gerber Current Age Comic Book Mylites+ Protective Sleeves 1 sealed pack of 100 E. Gerber Current Age Half Backs Protect Your Collectibles from the Effects of Aging: The Mylites are made of Mylar and used by National Archives and the Library of Congress so they will be good for your comics! Humidity Volatile Poly Bag Breakdown Acid Migration Oxygen Decomposition Insects Ultra-Violet Fading Molds & Mildew Oils & Greases The Boards are: Made from 100% Acid-Free, 35 PT Thick cardboard Ensuring extra rigidity and protection Produced with a 3% alkaline buffer Maintains ph of 8.0+ Meets U.S. Government Standards for Archival Storage Dimensions: Mylites are: 7 1/4 " x 10 ½ " plus 1 ½ " flap on the bags. Boards are: 7 x 10 ½” on the Full Back Boards.