It's a European thing. And actually very comfortable if you can get those little things between your toes while your socks are on.

It is also common in the Pacific Northwest (where Linus lives) and the Midwest. Basically places where you can't wear sandals all year round.

> It's a European thing.

Pff. Socks in sandals is basically considered a fashion-sin by most people. But I can only speak for my part of Europe.

It's a way to filter out those people who consider fashion important. ;-)

"Most people find it a fashion-sin", as in most people, including those who don't even care about Fashion.

yes, at home. This is a good way to save on heating bills.

I guess Portland summers are warmish.