The Mountain Hardwear Argon Jacket is designed for the serious mountaineer. Built with rugged GORE-TEX® Pro Shell, this shell offers the best waterproof protection and breathability that any jacket can offer. This jacket delivers exceptional strength and durability and still provides you with a full range of motion. The trim, climber fit provides the sportier fit that an alpine adventurer needs. Welded components, micro-tape construction and a helmet-ready hood meet the challenge of all elements. The watertight front zip and welded pitzips help to make sure no water will leak in. The Argon Jacket is a truly rugged 4-season shell that delivers unparalled weather protection.