The flag of the Isle of Man is a triskelion, composed of three armoured legs with golden spurs, upon a red background. It has been the official flag of the Isle of Mann since 1 December 1932 and is based on the Manx coat of arms, which dates back to the 13th century. The triskelion is an ancient symbol, used by the Mycenaeans and the Lycians. It represents movement, as do all symbols of this type.
The appearance on the Isle of Man of the Triskeles in the last third of the 13th century may well be connected with the regime change on the Isle in 1265, from Crovan to Scots kings. The symbol is anciently closely associated with Sicily, well known as a tri-cornered island, and is attested there in proto-heraldry as early as the 7th century BC. The most ancient name for Sicily, then a Greek province was 'Trinacria', meaning in Greek three-cornered, triquetra, referring to the triangular shape of the island.