The varieties of colours are very nice, though the lines we drawn were a lot thinner than I anticipated. They are more suitable for writing than colouring anything.
But this product is definitely not very washable. My toddler got different colours on his fingers and palms but could not be cleaned immediately. The colours on his hands were gone the next day.
I bought them because I thought they are very washable but on the package it mentions the pens cannot be drawn on some materials which means you may regret buying if you think they can be cleaned easily. This should not be advertised as washable.