The flag of Spain, as it is efined in the Spanish Constitution of 1978, is divided into three horizontal stripes: red, yellow and red, the yellow stripe being twice the size of each red stripe. The state and war flags and ensigns must be charged with the Spanish coat of arms, while the civil flag and ensign leaves the inclusion of the coat of arms as optional. The coat of arms must be placed at 1/3 the flag's length towards the hoist, and the height of the coat of arms should measure two fifths of the flag's width (i.e. hoist).