My 2 year old LOVES water wow books and so do I! She loves to colour but would draw with markers all over herself, and would bite the ends off her crayons so I would have to pay very close attention whenever she wanted to colour, whereas with this i have NO WORRIES and can leave her be. I really don't care if she sticks the water pen in her mouth. The only thing is that if your kiddos colour too hard they can wreck the pages, but honestly who cares. She sure doesn't, she just keeps on colouring. Great for travelling as well as there is no mess!