Two-Sided, Red & Blue Ruled Dry Erase Learning Mats are great for teaching and practicing fundamentals at the early learner stage. The bright white sheets contain 5 sets of blue headlines and broken mid-lines plus, a red baseline format. Each line set measures 1 1/8" with 3/8" of blank descender space between sets. The back side is plain white, dry erase with a blue border. The mats feature a high-quality, non-ghosting write-and-wipe surface with smooth, rounded edges and corners. The learning mats measure 9" x 12". Each pack includes 12 individual mats. Recommended age 3+ years