
Originally Posted by
Triskeliongirl
I love my PI vagabound II jacket. I have it in screaming yellow. It is a flattering trim cut, and does exactly what you want. Ventilates well, yellow from backside, nice large rear pocket.
It runs on the small side, so if you are between sizes size up. I got it right here on TE.
+1 on the Pearl Izumi Vagabond jacket. In fact, I've taken a couple of Triskelion's recommendations, and she has yet to steer me wrong. 
She's right about the sizing -- I normally take a size small, but I had to get a medium in the Vagabond jacket. And the screaming yellow is extremely visible!
The jacket packs well, and it's easy to convert from jacket to vest and back to jacket.
Since you're not looking for a warm jacket or one that's totally waterproof, I think the PI Vagabond is definitely worth considering.
-- Melissa
I'll get back on the bike soon, I promise!