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This down bag is thirsty for cold-weather. Constructed with 850 fill goose down, this lofty down Summit Series® bag is designed with bomber, waterproof Pertex® Endurance™ shell to prevent you from getting, or staying, wet in critically cold conditions. Most down bags lose their warmth when wet – this bag eliminates that.
Technology
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GOOSE DOWN FILL : THERMAL INSULATION
Down is considered to be the single-most warmest insulating material ever found on Earth. Down quality is measured by placing 1 oz. of goose down into a graduated cylindrical tube & measuring the
volume that the down material condenses down to (in cubic inches).
The "number" of fill power for each down material corresponds to the end results of condensing the goose down feathers in a cylindrical tube measured in cubic inches; as the number of
fill-power number goes up, so does the quality, loft, and condensability of the down material itself.
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Goose Down Fill: 850-Fill
850-Fill Goose Down is warm, durable, lightweight, and extremely compressible. Offering exceptional warmth while allowing maximum compatibility, 850-fill is considered to be one of the highest-
quality insulating materials used in the world today. Ideal for use by outdoor enthusiasts, for prolonged outings in frigid environments, and even for survival.
Benefits
Exceptional Warmth and Comfort
Lightweight Insulation
High Quality Goose Down
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