I was very pleased with the quality of the hat upon its arrival. Being unfamiliar with hat sizing, I had to refer to a sizing chart elsewhere on the internet. I carefully measured my head, and erring on the side of caution, I ordered a size assuming my head was a little bit bigger around than I measured. The hat is still a bit snug and it will not stretch out (as noted by the makers). So, if you don't have prior experience ordering hats from Tilley, they are definitely of good quality, but be warned that you need to allow ample room if you prefer your hats to fit a little loose.