The Womens Helium Stardust Jacket from Jack Wolfskin is a classic down jacket with subtle pattern. It can be worn as an insulating mid layer, a warm wind shell or carried as backup for rest breaks–this winter jacket is hugely versatile. It is very light, super warm and packs down small. The windproof outer fabric blocks out the wind, thereby increasing the insulation performance. The jacket comes with a practical pack bag so you can stash it in your pack for when you need a bit of extra warmth.