Ready for a quick, mindful colouring session? 100 Mandalas Part Two is the perfect choice for bite-sized colouring sessions One Hundred Mandalas Part Two is an adult colouring book containing pages filled with 100 colouring mandalas designed specifically to help achieve a state of relaxation. Colour them in with a pen or pencil to help find your own state of inner peace and tranquility, and explore your own spirituality.