100 - Artist Trading Card Crystal Clear Plastic Sleeves. Here we have a package of 100 soft, crystal clear, 2 Mil plastic ATC sleeves for preserving your artwork. These Artist Trading Card sleeves are open at one end, so you can easily slide your ATC inside. There is no flap and no adhesive on the sleeve so that your ATC is protected to let your artwork shine through. The sleeves measure 2 5/8 inches X 3 5/8 inches, and are acid-free and archival safe. Again, there is 100 sleeves per package.