I bought these boots to use in finish Lapland this December. I haven't visited yet but I can say so far they seem pretty comfortable. I ordered my true size and the inner boot fits really well, the outer boot is huge but I'm guessing the air gap makes the insulation better. Thy feel like they fit well from the inside but they are cumbersome! However having looked around they seem to be a pretty standard weight for this type of boot which is around a kilo. The true test will be if they are warm in the arctic circle!
Sorel Caribou Faux Fur Womens Boots