OptiMA Double Sided 12x18 Music Staff Dry Erase Lap Board. Made in the USA! 12" x 18" with smooth rounded corners and bull-nosed edges Music staff print is permanently protected with our exclusive dry erase writing surface and will never wear off. Board erases clean every time - no ghosting Double Sided - Print is Only on one side with plain white dry erase writing surface on the reverse side. Made in the U.S.A.