An 800 fill down jacket in a box-baffled construction for optimised insulation and weather resistance. This is a big duvet with big performance for use in extreme temperatures, or just when you are belaying in the cold! The sleeves and upper sections have highly water resistant fabric meaning you can wear it for longer in light rain and snow. It also packs into its own pocket for clipping to a harness or easy stowing in your rucksack.