Quattro artist journals have rounded corners that will resist damage as you carry it. The specially laminated cover resists dirt and stains. Substantial book board is built into the pad back making quattro journals sturdy for writing or drawing and comfortable in the hand. The quattro artist lined journal 3.5-Inch-by-5.5-Inch contains 80 micro-perforated sheets of quality, acid-free 90 GSM drawing paper. Delicate lines are printed in soft gray ink.