adrian F.wrote a review of Smartwool NTS Mid Cuffed Beanie on July 6, 2016
Familiarity: I've put it through the wringer
Very warm for the weight. It's been to NM and CO for ski trips in variable conditions. Mercury dropped to 20 F and at no point was my head cold. The beanie got wet and snowy and it was still warm.
I don't wear a helmet but this beanie would easily fit under one.