Definitely a hyped-up product but I wasn't that impressed.  I bought this nylon version but had to return it because it was about a size and a half too small.  I got a cotton version the second time around, one size up and it was still a little tight but probably would have stretched out and fit fine.  I can't say someone should order a size up but if enough other reviews come in that way maybe that advice will work out.  The cotton version I got was either cut or sewn wrong so that the brim and crown were crooked with one another.  It was obvious when wearing it that it wasn't sitting straight but looking at the hat, harder to tell.  The concentric stitching around the brim is elliptical in shape since the brim is narrower at the sides than fore and aft.  Where it passes by the side-seams of the crown, it could be seen that the crown's side seams and the brim stitching were not symetrical from side to side.  That is quality lameness on a hyped-up, overpriced product that claims it's made with "persnickityness" on the sewn-in label.  What a fail.

But to be fair, if you get a good example that flaw won't be a problem, so how is the hat otherwise?  I thought the cotton one was hot, but otherwise might have looked a little more natural than the nylon version which is lighter and might vent better but looks nylon.

Style-wise, it's just opinions... but the bigger brims are more functional and in Tilley designs they look too much like cowboy hats.  The smaller brims like this T5 design are less cowboy/crocodile style but also less functional.