Black Diamond designed the Men's Deploy Wind Shell Jacket to be the lightest shell around for emergency wind protection while climbing or trekking in the alpine. Its exclusive fabric is a remarkable 5 denier ripstop from Japan, and it features the world's first YKK Super Lightweight zipper for a total weight of around an ounce and a half. Black Diamond treated the Deploy with DWR for durable weather resistance. The jacket packs into its own pocket to fit in chalk bags and other pockets.