When you're up over 14k feet or exploring the deep recesses of the alpine backcountry, you need a serious sleep system to get you through your inactive times. Enter the Marmot Col MemBrain -20F Sleeping Bag. Baffled with 800+ fill down insulation, it will trap warm air near your body for unmatched warmth. It is light and compressible so it won't take up much pack space. On trips where you need a -20 bag, I'm guessing pack space is at a premium. The rest of your pack will probably be taken up by hot cocoa mix and marshmallows. The waterproof/breathable MemBrain® fabric seperates the Col MemBrain from the pack; it is durable and resistant to the elements.
So sorry, but only 4 items are allowed for comparison. I blame the gnomes and so should you.
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