Beret Flash Description
A black shield-shaped embroidered item with a semi-circular base 2 1/4 inches (5.72 cm) in height and 1 7/8 inches (4.76 cm) in width overall, edged with a 3/8 inch (.95 cm) yellow border.

History
The beret flash was approved on 20 February 1991.  It was amended to change the color of the border on 23 June 1992.

Source: The US Army Institute of Heraldry