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I wouldn't recommend leaving your child with this unattended. First of all, the markers are tiny and it is really hard to erase the drawings in the book. I had to use a soapy sponge and then dry the pages. Then one day my husband left our son coloring this in his room and came back to him drawing all over his table and chair set with the blue marker. It doesn't come out. No matter what you use, the blue dye sinks right into the plastic furniture and won't come off. This was a really bad purchase.
Wiping it down is a pain, and the drawings don’t fully disappear so it’s like drawing on black scratch paper. Good for the car, but must have wet wipes and something dry to clean up the wet. For that, I score it low. Otherwise, a decent concept for road trips.