Beret Flash Description
A teal blue rectangular shield, edged with a 1/8 inch (.32cm) white border, with arced base 2 1/4 inches (5.72cm) in height and 1 7/8 inches (4.76cm) in width overall on which is a diagonal red stripe 1/2 inch (1.27cm) in width extending from the viewer's upper right to lower left.

History
The flash was approved 27 Jun 1967.

Source: The US Army Institute of Heraldry