This hat DOES have an angled elastic interior band. Big (and other size) heads can wear it. I have a big head and it fits great.

This is a solidly made basic straw hat for sailors, beach goers, hikers, gardeners, outdoorsmen, horse riders, etc.

The logo on the front is kind of dorky. It looks like it is sewn on and can be removed by cutting a few threads, if desired. It would be much cooler if the same kind of embroidered logo was about 50-25% as big and attached on the side of the hat. More of a a small, tasteful pin size "feather on the side" like adornment.

UV radiation could probably can still penetrate through the holes in the straw so, it could use a basic cap like liner in the upper part of the hat and maybe a brim liner too. Both made of UV protecting cloth.

The only negative, and this is true with 99.99% of all hats made for the sun or outdoors, is that it has no removable and absorbent head band. Ideally, hats like this should have a velcro attached band of terry cloth which has an elastic backing. After a long and sweaty day outside, it would be nice to be able to wash the band and reattach it.