You lose a minimum of 35% of your body heat through the top of your head. This is one of the warmest hats you will ever own. Lined with black fleece.
With two-way ear flaps that (#1) close under the chin, (#2) over the top of the head, The flip-up bill stays out of your way until you need it.
Note: Navy Blue/Red/White are approx. 31 oz./yd. wool weight, while the other colors are approx. 22 oz./yd.