Baseball cap for yoga?

[Pandorapitstop]

I'm off on a yoga retreat to Spain soon, and will be enjoying some of the classes outdoors.
Any ideas for a hat that would be suitable for sun protection, but which would be comfortable for doing yoga.
I'm thinking that the best option would be a baseball cap.
Anyone seen any nice ones?

I don't think any hat would really work while doing yoga. The brim would end up getting in the way.

Headscarf instead?

Oh, a headscarf is a good idea. I’ve just been looking at bandanas in New Look which look like they could be ideal.