Low odor - great for use by a classroom full of students
Works on all standard whiteboard surfaces
Erases easily and completely - no staining or ghosting
Bold color can be seen from a distance in the classroom
Smooth writing experience - no squeaks!
Sleek graphite-colored barrel design won't be mistaken for regular drawing markers
Red, green, blue and black colors are sold in an assorted 4-pack, and in value-priced dozens.