I use one when it is cold. And after reading the comment about "getting in the way", I have found that to be just the opposite for my shooting. When I tie it off on the left side, it clears the right side of my face nicely. Look up how to tie them on that internet thingy. There are videos and such.
Best cold weather hat I every used. Seems odd, considering they are used heavily in warm climates.
And I know there have been some detractors here, that is cool. But these are so cheap, everyone should try it once. It is different, I will admit that.