The heater body suit is the best investment I've ever made for cold weather deer stand hunting. I no longer get cold on my all-day sits and dress lighter as well. To minimize scent and to protect from freezing, I put my food & thermos inside each of my "legs". Hunting with a hbs has allowed me to stay in my stands during cold, snowy/rainey, and windy weather. On a number of occasions, this has been the difference in getting a buck. The only challenge for me is that I like to read while on stand and this means the hbs is partly open while reading. When I was originally researching them 20 years ago, a good friend who was an outdoor writer said, "All you need is a good hat!". He was right.