When Mother Nature serves up wet, frozen whoopass, youll find few jackets more resilient than the MILLET EVO GTX ($530, milletusa.com), a burly yet light (24oz) three-layer GORE-TEX® hard shell. This slim-fitting, tech-nine jacket offers shoulder and upper-back stretch panels, so you can freely swing picks, climb, belay, etc. I dug the up-high, waterproof hand-warmer pockets, easily accessed while wearing a harness. And when things heated up, I turned to the mondo pit zips. The adjustable hood fi ts smoothly over a helmet, too. With Super Fabric® reinforcements on the shoulders and above the hips, this jacket is rhino tough.