Katie Harkerwrote a review of Penfield Harris Beanie on October 15, 2017
Familiarity: I've used it several times
This is among the warmest hats I have ever worn. It is super thick and covers down to the bottom of my ear. I believe it is due to the tight,warm weave of the fabric, but the hat is also pretty tight. I wear a small to medium bike and ski helmet and found the hat to be pretty tight overall. It did an excellent job of keeping my head toasty during a fishing trip in wet, 30 degree weather though.