The State Flag of Idaho was adopted in 1907. The dimensions were described specifically by the legislature :
5' 6" wide, 4' 4" deep, bordered by a gilt fringe that is 2.5 inches wide. The flag is to be blue silk with the state seal of Idaho 21" diameter displayed in the center. Under the great seal, the words "State of Idaho" are to be embroidered in gold block letters two inches high on a red band that is 3" wide X 29" length, positioned about 8.5"above and parallel with lower fringe.
The state seal image is a general representation, not as detailed as Idaho's official great seal. Idaho has the only state seal designed by a woman. Emma Edwards Green designed the original great seal, adopted in 1891 by the first legislature of Idaho. Her painting is held in trust by the Idaho Historical Society - it is rich with Idaho symbols (read more on the Idaho State Seal page). The current state seal is an updated version commissioned in 1957.