I hunt exclusively in an area very close to Lk Superior in northern Wi and it gets coooooooold. Like stated above, layerd cloethes is the ticket. Avoid bulk, unless you are rifle hunting in a cold season, then it' s no biggie. (I still hunt alot then so for me, it' s not an issue) To me, wind is what really cuts to the bone, especially when it gets late in the season. The new Windstopper (or similar) products are fantastic. I have a wool/windstop sweater and that with only a few other articles of clothes, and I' m good to go. My outer garments, whether they be regular camo or snow camo is quite thin. You can buy some inexpensive, but QUIET outer garments in various patterns for various seasons, then layer as appropriate.

The biggest problem I have if I sit too long are my darn toes. The adhesive backed toe warmer heat packs really do the trick in that case.