These are absolutely fantastic for the weather here in Finland. Every winter so far I've had my ears freeze every now and then because my hats can't keep out the cold wind. Well, beware, wind, you've found yourself a match. No more wind in my ears, and no more feeling naked because I'm not sitting by my computer with my big headset. Win-win.
The only bad thing I've got to say about these is I don't think they would fit everyone. They can't be adjusted, and they almost fall short for me with a hat underneath.
The material is warm and good quality, I have a feel these will be durable for many winters to come. They also look cute, instead of completely dorky as I many times feel with ear muffs. I'm in love.