Square Deal Recordings & Supplies (100) Game Books/Oversized Magazines Cast Polypropylene Resealable Outer Sleeves with Flap These sleeves will help protect your game books and magazines from shelfwear and help keep out dust! Resealable Strip on Bag to Keep Your Sleeves Shut! 2 Mil Cast Polypropylene 11-7/8" x 9-3/4" with a 2-1/4" flap (11.875mm x 247.65mm with a 57.15mm flap). Perfect for Your Dungeons & Dragons and other Gaming Books!