Known by Volcanologists the world over you’d think this Puma MF was filled with high lofting lava! 9.5″ of loft, 36 oz. of 850 fill power down, two densely packed Interlocking Draft Tubes and a full down filled collar will keep you in the ring of fire till 25 below zero. Its VBlock Side Baffle provides phenomenal down control, so necessary in a bag with this much loft. You get a 64″ shoulder girth so that there’s even room for layering. The MicroLite XP shell has superior breathability while being extremely water resistant. This bundle of warmth weighs in at just 3 lb. 7 oz. total weight.