Post-it Grid Notes, Super Sticky, 4621-2SSGRID, 4 x 6", Pack of 2 Pads. Post-it Super Sticky Notes in 3.9 in x 5.8 in size hold stronger and longer, yet remove cleanly. The Blue grid lines are great for techies, teachers and students. They also work well for sketches or to keep a to-do list organized. 2 Pads/Pack, 50 sheets per pad.