I have very mixed feelings about these dry erase boards. They are light weight which is great for my student (the heavy ones can do some damage during a behavior). The pink and blue lines do not wear off with frequent use (as seen in some other brands). Unfortunately, they very quickly and easily, get tiny little scratches all over the surface, making them look dirty and hard to wipe clean. Plan on using these for one school year and then tossing them. They are not durable enough to be used year after year.