Our warmest down layer for shiver-free belays on ice and alpine routes, aprs-trek at Everest Base Camp, and light-and-fast pushes in the high mountains that inspired Mountain Hardwear's existence: The Phantom Parka provides high-lofting, packable warmth with increased durability for an all-around jacket that shines in extreme environments. Wherever belays, bivies, and bone-chilling temps are guaranteed, make sure it's within reach.