From high mountain bivies to cold and windy ridgeline skin rips, the Mountain Equipment Women's Lumin Down Jacket provides exceptional warmth at a minimal weight. The Helium 30 fabric keeps the weight to a minimum while maintaining a downproof construction. For warmth, the jacket is filled with a hydrophobic goose down and is fitted with Lycra bound cuffs as well as a dual tethered drawcord at the hem. The insulated hood is adjustable, and it's helmet compatible for lightning fast ascents up cold and shady north facing routes. Two zippered handwarmer pockets give you place to warm your digits when you're back at camp, while its compressible design allows you to easily pack it down in your backpack without it taking up too much space.