The boots below are the best I have ever worn for cold weather. I can wear ankle socks and my feet arent cold.

The first boot of its kind with Triple-Insulation and still the best in its class. It's the perfect boot for the most rigorous cold weather demands. Cold Temp Rating -85/ to -150. 100% waterproof, full-grain leather upper. Superior cold weather polymeric foam insulation with Thinsulate Insulation plus a removable foam liner with 9mm felt sole. Felt midsole for comfort and warmth. Trac-Lite outsole for traction in snow and ice. Fiberglass shank for arch support. Weight: 7.4lbs per pair..

Feel much lighter than the above weight.