CRAYOLA-Dry Erase Markers. These bold mark and bright color markers can be seen from a distance. They feature a low odor making them perfect for use in the classrooms as well as at home and work. Complete erase-ability on all non-porous board types (will stain porous materials: fabric; wood; paper and more). This package contains four markers: black; blue; green and red with a vinyl pouch for easy access and storage. AWARD: Learning Magazine-Teacher's Choice in 2007 and 2008. Conforms to ASTM D4236. WARNING: Choking Hazard-small parts. Not for children under 3 years. Imported.