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2. Waterproof fabric - Wikipedia

   en.wikipedia.org/wiki/Waterproof_fabric

   Waterproof fabric. Waterproof fabrics are fabrics that are, inherently, or have been treated to become, resistant to penetration by water and wetting. The term "waterproof" refers to conformance to a governing specification [1] and specific conditions of a laboratory test method. They are usually natural or synthetic fabrics that are laminated ...

3. Gore-Tex - Wikipedia

   en.wikipedia.org/wiki/Gore-Tex

   Gore-Tex. 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 ...

4. Nikwax Analogy - Wikipedia

   en.wikipedia.org/wiki/Nikwax_Analogy

   Unlike most "waterproof breathable" fabrics, Analogy can pass out liquid water as well as vapour. Unlike a conventional waterproof fabric, Analogy would fail a hydrostatic head test (if used to seal the bottom of a tube containing water, only a very short column could be supported). However, like fur, Analogy causes water to flow away from the ...

5. Breathability - Wikipedia

   en.wikipedia.org/wiki/Breathability

   Mechanism. Air permeability is the ability of a fabric to allow air to pass through it. While air permeable fabrics tend to have relatively high moisture vapor transmission, it is not necessary to be air permeable to be breathable. Moisture Vapor Transfer (MVT) in waterproof fabrics occurs by two processes:

6. Robert W. Gore - Wikipedia

   en.wikipedia.org/wiki/Robert_W._Gore

   More popularly, Gore-Tex is known for its use as a waterproof, breathable fabric, used in outdoor clothing and sport footwear. To the human eye, it looks and feels like a smooth fabric. Structurally, the membrane of the fabric contains about nine-billion microscopic pores per square inch.

7. Hipora - Wikipedia

   en.wikipedia.org/wiki/Hipora

   Hipora consists of a three-layer microporous silicon coating structure. Some types are impregnated with microscopic aluminum flakes to enhance heat retention characteristics. The first layer prevents water from passing through. The pores are less than .5 μm in diameter. The second layer is a honeycomb structure that lets moisture in to let it ...