These cards are made from thick

Measuring 3 7/8" x 7 1/2" in size and made from smooth high quality 24 lb

It folds in half and lies perfectly flat for doodling on-the-fly

One lock secures bottom two drawers

JAM Paper Blue Letter Booklet Plastic Envelope with Button and String Closure is great for storing

HP 711 Black Ink Cartridge - 80 mL VariesBy:Default These cards are made fromReplace the ink in your HP DesignJet printer quickly and easily by having the HP 711 Black Ink Cartridge on hand. This ink cartridge contains 80 mL of black ink for seamless printing in high volume offices. The high quality ink is smudge resistant for easy handling without the wait and produces sharp images for prints, photos and graphics as well as text documents and presentations.