I second the advice about Smartwool socks. I use to have "cold feet". I would buy heavier and heavier insulation but my feet would sweet and get cold etc. Finally I broke down and paid the ransom they ask for Smartwool socks. Best money i ever spent. I can hunt comfortably in Uninsulated boots. The key to me was getting the moisture away from my feet. Lightly insulated or uninsulated with good smartwool socks is the solution.