Many people see the sun and moon as natural opposites. While technically incorrect, it is a popular theme. Natural Opposites Personal Checks play on this theme with playful images of a fiery sun and a cool blue moon. The sun provides us with the energy and light required to survive while the moon aids our survival in its influence over tidal forces. It's no wonder man is fascinated by these influences in our lives. Natural Opposites Personal Checks are available in single and duplicate check format. Matching address labels and a coordinating checkbook cover are also available.