I use on very cold or very cold wet days and it keeps my head warm and dry. Not that good for temps above 47F8C. It fits me perfectly with my small head and it looks awesome.
I bought this for a touring trip in Scotland. It was terrific in rain and it doesn't bunch like cloth caps.
Fits my 7 3/4in hat size head. Keeps the wet out, regulates temps. One hat to rule them all.
Great winter hat as it really blocks the wind. GoreTex has not always been truly water proof but this seems to be after a couple of wet rides. I got it on sale.