The original Mountain Jacket became an icon for good reason. Developed in 1985 to give climbers the same protection from extreme conditions as skiers, it has warmed the backs of some of our greatest mountain athletes on expeditions all over the world. This season's version features an elasticated hood, hem and cuffs for complete comfort and flexibility. And when the temperature rises, it packs away into its own pocket, ready to be used again when you next need it. Don't leave home without it.