It has gotten cold enough here that I gave these leg warmers a fair test -- since for me such things are not just for fashion -- and I can testify that they do help with survival. I appreciated knowing from another reviewer that they can itch on bare skin, so I went into it with a layer of long underwear (silk) underneath and got along fine. They're thick enough that if they do slide down they don't go very far (you do pull them back up after a bathroom break) and long enough that they cover from ankle bone to panty line. I wear nylon windpants over top since I'm not adventurous about wind chill or short skirts but I can imagine that my younger self might've had fun with these. I'd recommend them to a friend -- or her daughter.