Summit Batura Jacket LAVA BLACK Fully waterproof down jacket with fixed hood and box wall construction for extreme conditions. The Summit Batura jacket sits just below our Expedition Down jacket in terms of warmth. Hiding within the box-wall construction is 325g/11oz (size large) of 850 fill power European goose down and 30 years of down filling know-how. This is then all wrapped up in a waterproof and fully taped Pertex Shield® outer shell. The Batura has been extensively tested in the most ex