The Nike ACG Misery Ridge jacket keeps water and wind out with a GORE-TEX membrane, whose microporous construction lets water vapor from the body escape. Nike's Storm-FIT ADV technology pairs that membrane with lightweight woven fabric for harsh-weather comfort. What Our Gearhead(R) Experts Are Saying:"On wet, windy climbs, the loose cut left room for a mid layer underneath, and I opened the underarm zippers whenever I started to overheat. The jacket stayed comfortable on the way up and at the top."