100% nylon. Ripstop fabric. 860 fill goose down. Two-way zip fastening. Elasticated collar and cuffs. Packable. Zippered chest pocket. Two welted handwarmer pockets with zip fastening. Waterproof. Regular fit. Ever hungry-for-high-altitude-pursuits, Nanga sure know a thing or two about how to salvage precious body heat, and this Mountain Down Jacket is just one example of their divine wisdom. Made with some highly refined micro-ripstop fabric and kitted out with draft excluding elastication, this one is primed for throwing yourself up gorges, down valleys and through Asdas freezer section on that particularly icy eve that occurs usually around mid-Feb. And despite being stuffed to the brim with Polish goose down, it still manages to be packed into a little pouch too.