The red field is a traditional Manx color. The triskelion — three armored legs conjoined at the thigh — is an ancient symbol of the Isle of Man, associated with the motto 'Quocunque Jeceris Stabit' (whichever way you throw it, it will stand). Gold spurs on the heels reflect the heraldic depiction.
History
The triskelion has appeared on Manx seals since the 13th century. The flag in its current form was officially adopted in 1932 and confirmed for continued use under the island's status as a British Crown Dependency.
Construction
A 1:2 ratio red field with a gold triskelion of three armored legs conjoined at the thigh, running clockwise.
Color Meanings
red: The historic field of the Manx arms
gold: The armored legs and spurs of the triskelion