I made a hat to wear when riding around in my chair outside. Going 6.4 miles per hour can kick up a bit of a breeze, so I needed it to fit closely. I also wanted it broader in the back, with just enough brim in front to help shade my eyes, but not obscure my vision.
I based it on Lion Brand's Brimmed 'Straw hat', but as usual adapted it.
My Ravelry notes:
"My head is only 21 inches around, and the hat pattern as written is finished at 23 inches. I used a smaller hook, and dk weight yarn and adapted the brim to increase more rapidly so that my eyes would not be covered.
I used a single strand for the crown of the hat, to provide more aeration, and doubled the yarn where I wanted the hat to be stiff.
It will fit snugly, and not slip around, when I’m racing around on my wheelchair :-}"