I am also from Minnesota so I understand what your talking about when you say it gets cold during the hunt. I wear Under Armour underneath my hunting clothes and it really does help. If you do decide to purchase Under Armour make sure you get cold gear. they sell cold-gear and heat-gear and i've seen people buy heat-gear by mistake on more than one occasion. I also carry feet warmers and hand warmers, after using these I'll never go hunting without them again. They are only a buck a piece at a gas station-very much recommended for minnesota hunting