Cold feet in the evening
Short answer: Dry feet are warmer than thick socks. A damp foot in a thick sock gets colder than a dry foot in a thin one.
Why moisture is decisive
Water carries heat away from the skin far faster than air. A sock that has collected moisture during the day becomes a cooling element the moment you sit down in the evening and stop moving.
What works
Change into a dry pair of socks when you get home. That does more than pulling a thicker pair over the damp ones. See bamboo socks for women.
The material
Bamboo viscose takes moisture from the skin and releases it into the air rather than holding it. That is why the foot stays dry. See bamboo socks for men and bamboo compression socks.
Frequently asked questions
Why are the feet coldest
Because the blood withdraws toward the core when you are cold.
Do two pairs of socks help
Only if the inner pair is dry and there is room.
Is a foot bath a solution
Briefly. Dry the feet completely afterwards, or they get colder.