Originally Posted by
Polaris OBark
I'm still skeptical if any of this is for real, but if it is, you need to realize skin cancer, especially around here (Bay Area) is a huge problem. Don't take this risk.
I wear long-sleeve summer (cool) jerseys. They actually keep me cooler than short sleeve ones or arm protectors.
no shirt would keep you cooler than all of that, and since i commute 5 days a week most of my riding is not done when the sun is harsh.