• My chest measures 48" around, just under my armpits and my XXL Precip jacket-waterproof (for men) fits comfortably over a shirt., and is still comfortable over a light fleece vest. I measured my Precip in the same area and I got 53" just under the armpits.
    Answered on 4/14/2014 12:27:03 PM by droF from Novi, Michigan
  • I can't answer this specifically, but I found mine to run a bit small compared to other brands. Although I usually wear a medium, I found the large to fit perfectly well.
    Answered on 4/14/2014 3:25:20 PM by Paul from Seattle
  • 50-53 is correct. I can fit a down vest, sweatshirt, and two other layers under it comfortably.
    Generous sizing......
    Answered on 4/15/2014 9:33:41 AM by sirkka's walker from R.I.
  • Wish I could answer you're question Scott but I ordered a medium and the sizing chart was correct for the medium. You'll have to ask Sierra about the 2xl sizing chart.
    Answered on 4/15/2014 11:22:30 AM by KYJoe from KY
  • I don't have a tape measure. All I can tell you is this: I'm a fat boy, with moobs; I still have plenty of room in this thing, across the chest, even when completely zippered. I would probably err on the larger 50-53. Hope that helps ;)
    Answered on 4/18/2014 12:02:22 PM by Birdman from Hawaii