This is a 6"x 9" (15.24 X 22.86 cm) sized Adult colouring book, it has 2 each of 24 mandala and similar themed designs. Some simple some more detailed for anyone to jump into colouring, whatever there mood. Ideal for anyone of any age Our books from our colouring and activity books to notebooks, journals and diaries are the perfect gift for any occasion, especially as Christmas gifts, for both friends and family.