I received a few Summer Comfort samples last year, thinking I'd buy big (60 meters).
The quality is BL139. My favorite was/is the solid gray. 250g, but the bulk is reminiscent of Crispaire, which is a no-go for the hottest, most humid days of summer. I can see why bench tailors love the stuff, but, again, for me it works better in May, June, and September.
There's Panache. Fox also makes a panama worthy of mention.
And, to borrow from an earlier post, if you're okay...