http://www.ebay.com/itm/271761628954
This vintage jacket was made for the Swedish army. It is an asymmetrical pattern, with a large fold-over map pocket on the center of the chest. It has a cafe-racer style band collar with an adjustable strap to cinch it down. The jacket has a waist belt, adjustable cuffs and reinforcement at the elbows. It is made of very heavy green canvas, with a removable green pile lining for warmth. This is tagged a european size 52, which works out to a US 42. The pattern for these jackets is extremely oversized, as this, along with the matching overalls that would have originally been issued with it, were meant as an top layer with other winter gear underneath.
Tagged size: 52 (equivalent to a US 42)
Chest (pit to pit): 31″ (doubled = 62″)
Waist: 24″ (doubled = 48″)
Shoulder to shoulder: 23″
Sleeve (shoulder to cuff): 27″
Length (base of collar to hem): 26″
Vintage-Haberdashers Blog 
I have a sweedish military jacket like this, but with a hood and a thicker lining that does not zip out. It is a lighter grey-green color. It has an imprint indicating that it was manufactured in 1955. I have been told it was a paratroop jacket. It is a fantastic jacket for the cold winters here in Calgary.