Flag of Spain depicts fess
The coat of arms of Spain has a height equal to 2⁄5 of the hoist (height) and will figure on both sides of the flag.
When the flag is of regular proportions, having a length equal to 3⁄2 of the width, the coat's axis is placed at a distance from the hoist equal to 1⁄2 of the flag's height.
If the flag's length is less than normal, the coat of arms is placed at the center of the flag.This type of triband design has become known as a Spanish fess.