I rode fence in Colorado winters (on sunny days) in a Royal Canadian Navy sea
coat. It was thick lined cotton, about the length of a USN pea coat, and wore
like iron until I lost it in a bar in Taos. Where did you ranch, Mike?
Joe F

Back in my H.S. days on the ranch I often wore my Dad's
arctic flight jacket while doing the chores. Dark blue nylon
with the old 50's-era USAF insignia dyed on the shoulder.
Ideal when sitting in a saddle rounding up the herd at 30-below