Two-Sided Dry Erase Boards, Red & Blue Ruled/Plain, 9" x 12", with Colored Pens & Student Erasers, Class Pack 12Learning to write takes practice, practice, practice. Ruled dry erase boards make that happen while saving paper. Sized to sit on a desk or a lap, these boards will get your students on their way to mastering handwriting quickly! Boards measure 9" x 12". Each set includes 12 boards, 12 erasers, and 12 colored pens (3 of each color; red, blue, green, purple). Recommended age 3+ years