I love wearing them but in the winter how do they keep you warm? Iv got to out on several pairs just to keep warm I do love the feeling I've wearing them
I don't know how a single layer can keep you warm, but generally clothes work by trapping lots of tiny pockets of still air between the outside air and you body.
I wear them all the time under my pants - everyone thinks they are long underwear ... sometimes I wear pantyhose (control top under my snuggly tights ...