Body armor, is it rated, or somehow tested for efectiveness?

[Richsuz]

This outfitter has slightly higher prices but, the demonstration videos are very helpful!

http://stores.sportbiketrackgear.com/Detail.bok?no=4152

Myself I found some construction worker knee pads for $30 that I'm convinced will do a very good job in a crash. They payed for themselves already, because I used them while installing 2 skylights last week!
If I was going to spend more money, it would be for these Knox knee guards.
Bill

Very interesting product these knox guards. I specially like the off road ones. Visually, they look like they wouldve done a better job than the AXO. I have also heard of some that have some sort of metal ribing, but have not been able to locate them on line.