Question: Combat boots are military boots designed to be worn by soldiers during combat or combat training, as opposed to during parades and other ceremonial duties, today, many combat boots incorporate technologies originating in civilian hiking boots, such as what, which  is a waterproof, breathable fabric membrane and registered trademark of W. L. Gore and Associates?
Sentence (from "Gore-Tex"): It is composed of stretched polytetrafluoroethylene (PTFE), which is more commonly known as the generic trademark Teflon.
Relevant evidence: No