Expo Blue Low-Odor Chisel Tip Dry Erase Marker Package of 12, features bold ink that is easy to see from a distance and provides consistent color quality. These Expo dry erase markers erase cleanly and easily from whiteboards and other non-porous surfaces with a dry cloth or Expo eraser. The dry erase marker ink is specially formulated to be low-odor making it perfect for use in classrooms, offices and homes.