At the core of GORE-TEX technology is an extremely thin membrane that’s durably waterproof, windproof, and breathable. It has over nine billion pores per square inch. Each pore is 20,000 times smaller than a drop of water, but 700 times larger than water vapor — or sweat. This means that rain is kept out while perspiration vaporizes, so you’ll stay dry no matter what.
A true waterproof running shell for cool, wet weather. Lightweight, windproof, and easy to carry, with a slim athletic fit that moves naturally on the run. Best for overcast, stormy days and mountain adventures, but runs hot near 40°F+.