I’ve seen some other women wearing crew socks over their leggings while running and stretching. It looks like aesthetics over functionality but I may be wrong.

I’ve also seen some younger girls wearing what seems to be like very long socks over their leggings, almost covering their knees.

I don’t see how that can be easy or comfortable to wear or train on the long term but I may be wrong. If you do this, does it work to keep your legs warm?

Any drawbacks?