The current official flag of the nation of Brunei has been in use since 1906 when Brunei became a British protectorate. The crest on the flag was superimposed in 1959 after the promulgation of the Constitution of September 29, 1959.
The official flag of Brunei consists of a yellow base with white and black stripes that run diagonally across the flag. In the center of the Brunei flag is the coat of arms in red.