Disney Frozen Invisible Ink Coloring Book for Kids - Magical Reveal Activity Set with Elsa & Anna - Perfect for Birthday Gifts, Travel Entertainment & Creative Play

My daughter loved this! She is almost 5 and of course, obsessed with Elsa. I almost did not buy this because of the poor reviews about the pen running out. She did the entire book in one sitting & the ink seems plentiful still. I did warn her not to "scribble scrabble" over and over the same place on the page because it would use too much ink. She listened & had no problem. I love invisible books from when I was a kid, so decided to purchase more to keep her busy. I thought she would like to try a different book, but she insisted on another Frozen one. So, bought another one!