This classroom set includes 12 durable Masonite lap boards that are plain white and 9" x 12". A box of 12 Pocket style dry erase markers with bullet tips in black and a 12 pack of 2" multi-purpose erasers are included. It's an environmentally friendly way to learn, as you just write, wipe off and re-use with no waste. Details:9" x 12"2" multi-purpose erasers12 packMasonite, plasticMarkers are AP Certified