Ok, please don't hate me, but...

I live in Puerto Rico, where "winter" means it's 70 to 85 degrees during the day and "fall" is when you wake up one Sunday and all your tv shows mysteriously run one hour later than they have all summer.

Now that I'm doing longer rides (3-4 hours) I keep getting sunburned, no matter how much SPF 50 I put on.

It appears that my options are armwarmers or long-sleeved jerseys. Since I'm not exactly thrilled about the idea of covering my arms in fleece while I roast in the sun, I would looove to find a long-sleeved jersey that's made of the same breathable, lightweight material as short-sleeved jerseys.

Have any of you found jerseys that fit that description? Any jersey which has long sleeves but is too thin for your fall/winter riding would probably be ideal for me, so if you find one... please let me know.

Thanks,

~Cari