Upon taking this ear warmer out of the package I was stuck by how cheaply made it felt, even for a $15 set, and how little insulation there is.  Secondly, the frame is made to resemble a faux carbon fiber look but has the strength and rigidity of a strip of balsa wood.  After an hour in the cold, the cheap plastic was so brittle I couldn't even put it on my head before it snapped clean in half.  This is the cheapest possible plastic you can buy as it, ironically, has no ability to withstand low temps without becoming dangerously brittle.  Don't waste your time buying this item or reading the fake reviews for it.