I really love all the excuses you guys come up with. I guess none of the below applies to my case. I guess I need an SPF 50.
Here's what is on the 303 site:
303 is THE LEADER in UV Screening Technology. 303 Aerospace Protectant really is like "SPF 40 Sunscreen ... For Your Stuff."
Here's some places for use:
Vinyl: Convertible tops (and the clear vinyl windows), isinglass, marine seating, tonneau covers, car bras, covers, spa covers, pool covers. Inflatable boats: Hypalon, PVC and urethane blends