I have great hunting clothes. But anymore they seem heavy to me.

In your experience, what is both the lightest and the warmest set of hunting clothing you have used.

Down is lightweight but can be bulky when worn and is worthless if it gets wet. However, in a layering system it is essential as far as I'm concerned. I have the Cabelas 650 down jacket that gets donned during periods of inactivity and can be rolled up pretty small when not used.