This envelope style cap was never issued, but was extremely popular with all the troops as a private purchase item. Today they are commonly known as the "paratrooper" style because of misinformation in a certain well-known movie. Infantry braid ONLY.
My earlier reproduction of the special mountain trousers issued to 10th Mtn Div and 1st Special Service Force. The fabric is a little lighter in weight than the originals, but you won't know it by looking at them. CLOSEOUT