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The Western Mountaineering Puma MF has 9" of loft, 36 oz. of 850+ fill power down, two densely packed Interlocking Draft Tubes and a full down-filled Super Collar to keep you in the ring of fire down to 25 below zero. Its V-Block Side Baffle provides phenomenal down control and keeps the loft on top of you where it belongs. The Puma also has a 64" shoulder girth so that there's even room for layering on those really cold nights. The MicroLite XP shell has excellent breathability and is extremely water resistant. This volcano-like bag weighs in at just 3 lbs 7 oz, so you can take it anywhere, any time you need to bring the heat.
Like all of Western Mountaineering's bags, the Puma MF is made by hand in San Jose, California. Their down is sourced from free-range mother geese who are never live-plucked or force-fed.