GORE-TEX
The core of all GORE-TEX® fabric-engineered products lies in the GORE-TEX® membrane, which boasts an astounding 1.4 billion microscopic pores per square centimeter (9 billion pores per square inch). These pores are incredibly tiny, being 20,000 times smaller than a water droplet, while they are 700 times larger than a water vapor molecule. This means that external water will never breach the membrane, while perspiration can effortlessly escape, reducing moisture buildup within the insulation. The outcome: you remain warmer in cold conditions and drier when you perspire.