These ear warmers are very comfortable, easy to put in a bag and fold & unfold.

They are also light weight enough to not cause pain in my ears, and they defend me from the chilly winds very nicely.

EDITED in Dec 2011 :

I saw certain other bad reviews and I am surprised that there are plenty of 1 star reviews. I have been using this product extensively in frigid temperatures of around 10 degrees Fahrenheit to protect my ears, and truly speaking, my ears are very sensitive. And these ear warmers work brilliantly for me. In fact, at times when I wore them at temperatures of around 32 degrees Fahrenheit, they proved to be too warm, and I had sweat running down my ears and neck area.