Vintage US Military Shirt & Pants Men's  Utility Poly Cotton. See description !!!.

Reinforced Knees and Seat

Unknown if its authentic or reproduction HOWEVER, I purchased this and other uniforms at an estate sale. Everything he had was original. He was a Colonel in the Army & Had many awards & memorabilia from his time in Vietnam.  However this does not have any of the tags with the size and description. 
Pants: size 34-31
Waist 18"
Hips 23"
Length 41"
Inseam 29"

Top: size 16 1/2  36
Chest 24"
Length 29"
Sleeve 23"