Mountain Equipment Lightline Drilite Women's Down Jacket - IndigoFirst introduced in 1977, the Lightline jacket has become one of the most iconic down parkas around a definitive version of an essential bit of kit. Built to survive the rigours of mountaineering, this a perfect winter performer the 700 fill power down will keep you warm in freezing conditions, and the Drilite Loft outer fabric keeps the wind at bay, and makes for a highly durable, ever dependable winter jacket.