On a white circular embroidered item, three blue wavy lines 1/4 inch (.64 cm) high, each line 1/16 inch (.16 cm) in ward from the edge of the circle; all within a 1/8 inch (.32 cm) red border. The overall diameter is 2 1/4 inches (5.72 cm).
The three waves suggest the mission of the Command to guard the United States along the northern ocean frontier and the colors red, white and blue are the National colors.
The shoulder sleeve insignia was approved on 15 January 1943.