These erasers marked 87.7% in erase tests, every corner of the eraser can be used as a real eraser. They are also puzzles (small parts, not for children under 8 years old.) The Japanese erasers are hand assembled one by one in Japan, parts of different colors can be taken apart and put back together, it is a fun way to train children's finger skills, association and relationship of various objects and shapes.
We have airplanes, helicopters, various cakes, desserts, fast foods and animals. Makes a great gift when you put several in one of their little clear plastic boxes or great as party favors.