The white summer shirt. I thought I was the only one who wears a lot of white shirts in the summer. I have white in different materials including linen, linen/cotton, Zendaline and some other open weaves that I don't know the name.
Interesting, though I find the whole rolling up French cuffs thing to be a bit strange. Especially for something like a linen shirt which is worn more casually, I think button cuffs would be a better choice. And this is coming from someone who generally prefers French cuffs on everything.