This should raise some purist eyebrors. Back in 1972 , when the new Pa. primitive flint only deer season was opened , there were many neophytes in the woods trying to become a flintlock deer killer. I was one , along with my then new hunting buddy. Being young , we always had to carry food ( hunger is a terrible thing) , with us on a days hunt. We each had a basic sandwich in a pocket , in an empty plastic bread loaf bag. One of our first days out hunting , the weather turned into a snowy crappy day , and in desperation , sandwiches were eaten early , and the empty bread bags made fine three wrap lock protectors. All stayed dry abd locks fired flawlessly. This bread bag "deer's knee" experience , prompted us to research the problem , and a couple kinda unusual imitation deer's knee lock protectors got invented. Mine was the standard one seen today , but hunting buddy's looked like a 1 ft. round soft leather beanie , complete with all the teasing due to it's unusual chinese hat shape. It's all good , we had fun , and dry flint locks.