Pre-printed lines offer a great work place to practice penmanship, sentence writing and more. Durable masonite lap boards are 9" x 12" and can be used with all dry erase markers. An environment friendly way to learn, as you just write, wipe off and re-use with no waste. Details: White with red & blue grid lines9" x 12" Bundle of 12 BoardsGreat for all classroom assignments Bright finish allows for easier viewingDurable backing withstands the roughest of users