My USA Danne'rs have worked well. Depends on how much walking your are doing but 400 grams of insulation is usually plenty. If you are sedentary than much more will help, beyond around a 1,000 grams of insulation the boots will not be good for walking in.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli