The kids toes and mine ;)
As you can see I'm the one with cold feets wearing woolsocks. The first thing Erlend does is to take his socks off when he comes home from school, so that's him going barefoot ;) Oh, how I wish I had so warm feets. He must have it from his dad, because he always has warm feets that I can warm my frozen toes at when we go to bed ;)
You can see more nordic feets here.