The flag of Isle of Man features a red background with a centered triskelion in yellow. The triskelion consists of three bent legs, each ending in a spur, joined at the thigh and bent at the knee. The flag has an aspect ratio of 3:5, meaning its width is three-fifths of its height. The official color codes for the flag are Pantone PMS 186C for the red background and Pantone PMS Yellow for the triskelion. There are no specific measurements or geometric properties mandated for the flag's design.