Gore-Tex
| Gore-Tex logo | |
| Type | Fabric | 
|---|---|
| Material | expanded PTFE | 
| Production process | Mechanized | 
| Introduced | 1969 | 
| Manufacturer | W. L. Gore & Associates | 
Gore-Tex is W. L. Gore & Associates's trade name for waterproof, breathable fabric membrane. It was invented in 1969. Gore-Tex blocks liquid water while allowing water vapor to pass through and is designed to be a lightweight, waterproof fabric for all-weather use. It is composed of expanded PTFE (ePTFE), a stretched out form of the PFAS compound polytetrafluoroethylene (PTFE).