Toby, good idea. You may also want to check out your regular winter gear to see how it works in the real world. Last winter, it got down to -10F with a -30F wind chill. I took advantage of the weather to put on my heavy winter clothing and go for a hike. I discovered two weaknesses in my gear that I have remedied so don’t forget to check out all your gear, not just put it in your car/BO bag/ etc as it must work.
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