New arrival!
It fits snugly on a skull circumference of 57.5cm, with no feeling of looseness and the back strap stretching slightly.
It has a shallower fit on the upper part of the head compared to the Gatsby Cap | RC077X Black that was purchased together.
Suitable for all seasons.
The quality of materials seems good. Overall, I find it great.

I did not give it a higher rating simply because even though I got the L-XL size, I still found it to be small and tight. Maybe that's how it's designed, but I didn't like it. The other one I got (B623) from the same brand was very good.