My thoughts on Gray Wolf as I posted Terry’s link above:
I have Gray Wolf insulated bibs, uninsulated pants, insulated vest, insulated jacket, custom mittens, and bomber hat, that are my go to colder weather gear. I have King of the Mountain in their version of most of the above items, they mostly sits in the closet because the Gray Wolf is warmer.
When ordering, order cargo pockets, they do not come with them. In addition, order cinch straps on your bow arm, their coat arms are a little bulky and arm guards are a PIA in cold weather.
Wore my insulated GW bibs, KOM Shirt, and GW jacket, on stand last week when it was -15. An hour into the hunt, I shot this years buck, I was comfortable, and still comfortable when I got off the stand an hour later. A little bulky, but I do not have any problem climbing into my treestands.
I highly recommend Hidden Wolf, excellent quality, and excellent customer service.