I've also been looking for a light weight sun protective jersey and boure dot com has a new team jersey that is UPF50. It sounds great for hot weather riding. If you preorder it's $10 off. I thought about ordering the Jaggad Solrace, but this is less expensive and a higher UPF to boot. I ended up ordering one for my Ironman-in-training DH, too.

It won't arrive until April, but given that we got about a foot of snow since Friday, I'm not in immediate need of it!

Alex