This Adult Coloring Book is a heartwarming Gift for Penguins lovers, The book's size is large 8.5*11 Inches and It includes unique illustrations that are cute and adorable. This Adult Coloring Book is one of the best Penguin Gifts out there because it keeps any penguin lover busy coloring for days and weeks to come. The Penguin illustrations in this coloring book are detailed and need more time than simple coloring books to finish.