JOHN B B.wrote a review of SUGOi SubZero Skull Cap on June 15, 2016
Familiarity: I've put it through the wringer
I decided to get more serious about riding in cold weather this year. I began cycling in early February after I was no longer able to ski the Bighorn Trail due to an early thaw on the upper Gallatin River. The SUGOI SubZero Skull Cap replaced my pullover balaclava and it is much, much warmer. It covers just enough of my ears and back of my neck to keep my head comfortable. I bicycle regularly over Bozeman Pass to Livingston and back, and this keeps my head very warm. I rode in weather that was in the upper thirties, and while there were parts of my hands and legs that were too cool, my head was plenty warm. This is a very effective piece of equipment.
I have a size 7 3/8 head. I've heard that on larger skulls, coverage may be inadequate. For me, however, the size was perfect.