Used almost as a colloquial term for a waterproof and breathable jacket. Gore-Tex® Fabrics, developed by W.L. Gore & Associates, have an ePTFE membrane that is laminated to different face fabrics to produce cloths that are waterproof, windproof and breathable. Gore-Tex® Fabrics can only be used by licensed manufacturers. Gore-Tex® fabrics utilize a wet system to permit breathability.