The CWM EQ -40 Degree Sleeping Bag by Marmot. Welcome to the outer limits, astronauts. High-quality 800+ fill goose down and MemBrain waterproof, breathable fabric form the core of this portable environment-designed to deliver restful sleep, down to –40 F, in the harshest alpine environments. Over-engineered with sturdy reinforced linings and countless baffles for a lifetime of dependable comfort and protection.
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