The GORE-TEX® membrane is at the heart of all products engineered with GORE-TEX® fabrics. It contains over 1.4 billion microscopic pores per square cm (9 billion pores per square inch). These pores are 20,000 times smaller than a water droplet, but 700 times larger than a water vapor molecule. Water from the outside will never penetrate. Yet perspiration can escape easily, so that less moisture is trapped in the insulation. The result: you stay warmer when it’s cold and drier when you perspire. 

The “CE” marking means that the product meets the basic health and safety requirements of European Directive 89/686/EEC.