I own over 20 running hats from all sorts of brands. I came across this one at the London Marathon expo while picking up my bib. It felt light and breathable, and it looked good when I tried it on so I bought it.
I tested it the next day on my final tapering run, then wore it on race day. It was a hot one, and I sweat more than the average person believe me. Usually, my running sunglasses fog up, but they didn’t with this hat. That’s what made me choose it over my previous favourite.
I can honestly say this hat kept my head cool, shaded my face from the sun, and stopped me from having to constantly take off my sunglasses to defog them.
The only improvement I’d suggest based on my experience with running hats is to make the bottom of the top pin plastic. From what I’ve seen, every hat I own (except one with a plastic pin) ends up rusting or corroding, which can cause skin irritation. I speak as a bald man if you’ve got hair, your experience might be different, but this has been mine.