Check the listing for details. Mylar Bag & Thick Board Combo :: Qtys: 10-50-100 for MODERN & SILVER Comic Books. Color: Crystal Clear Bag; White Board, Condition: New. Listed at 19.99 USD. Comic Book 56pt Backer Board & Archival Safe Mylar Bag Combo Choose from Available Sizes: 1. Modern/RegularBacker Board Size: 56pt/1.4mm :: 7" x 10.5"Acid Free; Precision Cut; Coated One Side Bag Size: Mylar 2mil :: 7 1/8" x 10.5"Acid & Moisture Resistant; Made from Archival Mylar; Will Not Turn Yellow or Break Down w/ Age; Great for Long Term Storage; Durable & Stable. 2. SilverBacker Board Size: 56pt/1.4mm :: 7 1/8" x 10.5"Acid Free; Precision Cut; Coated One Side; Excellent Protection vs Standard 24pt Boards. Bag Size: Mylar 2mil :: 7 1/4" x 10.5"Acid & Moisture Resistant; Made from Archival Mylar; Will Not Turn Yellow or Break Down w/ Age; Great for Long Term Storage; Durable & Stable Let me know if you have any questions. Shipping is fast and free via USPS Ground Advantage or Equivalent Service. Thanks for looking!!