The bright white economical sheets feature a bright blue border and plain white dry erase surface on both sides. Dry Erase Learning Mat, Two-Sided Plain, 9in x 12in, 12PK Each pack includes 12 individual mats. Flipside Learning Mats are lightweight, making them simple to carry between class and home, plus they're easy to store. Two-Sided, Plain Dry Erase Learning Mats make everything more fun!.