Quattro works. Now available in six sizes it will work the way you want. Rounded corners mean Quattro will resist damage as you carry it. The specially laminated cover resists dirt and stains. Open a Quattro Grid Journal and fold the cover around to the back to reveal its truly refined grid pattern. Each 90 gsm super-smooth acid-free sheet is printed in soft gray ink. Sheets are micro-perforated for effortless removal.