Description Eraser back material: EVA+ foam . Eraser surface material:Felt. Size:10.6*5*2CM. Color:sent at random. Clean any large or small board easily, no need for sprays or cleaners. Eco friendly, non-toxic, no smell. Felt bottom surface easily removes all dry erase ink from any dry erase board. Great help to managers, teachers, students and children. Suitable for home, office, school, dormitory, game room, play centers etc. Package included: 1/4/6/8/12/24pcs * magnetic blackboard eraser(as your choice)