Charlie has been complaining that it's cold on our walks to/from school, and I think it's because his legs aren't warm enough when his pant legs ride up and expose his ankles.

At first I thought about putting him in thermal underwear, but it's really warm inside the classroom so I think he will be uncomfortable in them all day.

So I'm thinking knee high socks would be a nice extra layer of warmth. Anyone purchased knee high socks for their kids?

How do you keep their legs warm on cold days?