Dirkoff, those protectors are kevlar and were hand made by a member that use to be on this board. He went by "Bigtwin". No one has heard from him in a while it seems. He made tank guards for many here and even did some other hand laid guards and windshields as I recall. From what I understand they are much thicker and seem to be tougher than the carbon fiber offerings. I can tell you they work well. Yo Greg! How's the leg?