A friend of mine gave me a pair of these a few years ago as a present and I fell in love with them.  I'm not a hat, scarf, ear muff kind of person, but my ears do get cold.  These cover my ears and keep them warm - even if I have sunglasses on.  My first pair finally wore out (the springy part that holds them against your ear got a bit loose on one of them) so I decided it was time for a new pair and found these.  They are great quality and fit and do the job of keeping my ears warm extremely well.