Alpha Industries has been around for awhile, and their N-3B is truly a great Parka. I was first issued one of these for some cold weather ops while on active duty back in the 1980's. Due to a recent relocation from the Tropics to the Continental U.S. - - - a winter coat is MANDATORY for this old sun bum!I have read where other customers have written in their reviews that 'the one I received did not have metal zippers, or the Orange lining.' Received mine this morning, and it had both. When I opened the box, I could not believe how well this Parka was packed. There was paper protective wrap around each individual button that anchors down the storm flap. The faux fur on the hood was protected with both paper, and a clear plastic over-wrap.Since this had metal zippers, I knew that the first order of business was to place a few drops of household 3-in-1 oil into the zipper clasp, then slowly work the zipper along the full length of its' track in both directions a few hundred times to gently break it in. Reoiling as it becomes necessary. This will help to ensure trouble-free operation over many years. These zippers are very sturdy metal.I am 5 feet 6 inches (1.6764 M) and weigh 160 (72.5748 Kg) pounds. I ordered a Medium Slim Fit. The coat fits perfectly.No doubt this will be a warm coat, especially if you layer your upper body. I do not. It was 28 (-2.2222 C) Fahrenheit when I took the coat outside to test it for the first time. I wore only a light T-shirt underneath. There was a 17 knot northerly wind blowing. After standing in the wind for about ten minutes, I had to undo the top button of the storm flap and unzip the zipper to that level - - - as I was getting toasty to the point of overheating. I did not try putting the hood on.In summary, this is a great coat!