This classroom set includes 12 durable masonite lap boards that are dual-sided, plain white, and lined. Boards are 9" x 12". Also included is a box of 12 Pocket style dry erase markers with bullet tips in black and a 12 pack of 2" multi-purpose erasers. An environment-friendly way to learn, as you just write, wipe off, and re-use with no waste. Markers are AP Certified, Conform to ASTM D-4236.