I bought this jacket as an extreme insulation layer for running/pacing ultra marathons overnight, when conditions get cold, and you may not be moving quickly. Or for running in extreme cold. I have used it for both and am beyond please. The last run was 6F with 10 mph wind gusts. I only wore a wool base layer, this jacket and a Gortex windbreaker and had all the warmth without any of the bulk. Usually I'd have quite a few more layers on in those conditions. I've also taken it camping and worn it to pace runners when they were 80 miles into a mountain race and not moving quickly. It's a great piece. The fit/cut is perfect - flattering but gives you room for movement. I was surprised by the versatility and highly recommend the jacket - although it looks like it is going away?
AJS Trail Runner