The Felt Blackboard Eraser is the old school way to clean your black boards and chalk boards. The felt block has deep ribs which absorb the dust. The slighly rough surface gives the necessary resistance to reove chalk easily.
Cleaning the relt blackboard eraier is easy - are you old enough to remember how? Just beat out the chalk by banging the eraser on the brick walls of the school at recess. I loved that job.
If you're at home, don't do that. Bang two erasers together or bang it upon an inconspicuous spot. The dust will easily wash off if you did need to use a wall.
Made of felt and wood
12.7 x 5.5 x 4 cm
Made in Germany