Shirt, Blue Wool, Chief Petty Officer, US Navy NYDJ Women's Contessa Wedge Sandal USMC MALE OFFICER BLUE DRESS BLUE WHITE DRESS UNIFORM ("A" AND "B") Even though it was initially issued to U.S. Navy Chief Petty Officers, there's nothing petty about the CPO shirt. It's a cold weather classic crafted from thick wool, designed to be a layer Official dress uniform is of blue hi res stock photography and images Alamy Uniforms of the United States Navy Wikipedia