The Ortovox Ortler GORE-TEX Jacket runs on a new GORE-TEX PERFORMANCE membrane that weighs just 86 grams per square meter, yet still holds a waterproof rating of 28,000mm and blocks wind completely. That combination lets the jacket pack down small enough for any backpack without giving up the protection a demanding ski tour actually needs. A 2-way adjustable, helmet-compatible hood, underarm venting, and a dedicated ski pass pocket round out a shell built specifically for the skin track rather than adapted from a general hardshell. What Our Gearhead(R) Experts Are Saying:"I climbed for two hours in a full whiteout expecting to sweat through the shell before the storm ever got the chance, and the venting kept up with me the whole way. The jacket never felt like the compromise a jacket this light usually is."