Rule # one in cold weather Cotton Kills !.......... Rule #two see rule#1............
You don't have to spend alot of money to stay warm, just make sure you layer your clothes. I am a big fan of wool, with a light gortex water proof jacket in my day pack.Stay dry and use hot packs, PS don't wait untill your numb to open up the hot pack's. on real cold day's open the hand warmers in the truck, so at 8-9am when you can't take the cold they're ready. On a cold calm morning those plastic rapper's, make a lot of noise too.

Redallison....is giving you good advice.