I'm thoroughly impressed with my uncle padre so far...shot an outdoor 3D with just that and a 200 weight merino a couple weeks ago, was about 2 degrees and had some hail, rain and a bit of wind but I was nice and cozy the whole time. For stationary glassing I don't think you can go wrong with the lost park parka, my buddy was in -26 with it last week with just a 250 weight merino underneath and said he was nice and cozy, it's a bit heavy and definitely wouldn't be considered an active insulation piece but the thing will keep you warm.