The discussions about base layers and humidity has been beaten to death. When people (like me or botto) bring up the effectiveness of base layers as crash protection, we get dismissed. "How can a tiny piece of fabric help in a crash". Well the point of my thread was just to show that it can and does lessen the road rash from a crash considerably. Of course I would rather not crash, but given that a crash may happen, we don various safety gear such as helmets, potentially shave our legs, some people worry about whether their glasses are outside of their helmet straps, etc. And in cars we wear seatbelts, motorcycle riders wear leathers, etc. We all hope and try to not crash, but we do what we can to mitigate the after-effetcs.