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Down Fill

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The North FaceMountain HardwearBlack DiamondOspreyMarmot

Lite Sleeping Bag: 45 Degree Synthetic

Selk'bag USA, Inc. Lite Sleeping Bag: 45 Degree Synthetic

$98.95

  • purple
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  • gray

Deer Park Sleeping Bag: 30 Degree Down

Big Agnes Deer Park Sleeping Bag: 30 Degree Down

$249.95

Auriga Blanket: 35 Degree Down

Therm-a-Rest Auriga Blanket: 35 Degree Down

from $269.95

SB 35 Sleeping Bag: 35 Degree Down

Kelty SB 35 Sleeping Bag: 35 Degree Down

from $249.95

Big Pine Down Blanket

Big Agnes Big Pine Down Blanket

$349.95

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How to Choose a Down Sleeping Bag

Get the Low-down

Down bags use duck or goose down, which consists of the small, fluffy feathers birds grow next to their skin for insulation. Ounce-for-ounce, no man-made fiber can match the warmth-to-weight ratio of this remarkable material. Highly compressible and extremely lightweight, down is the preferred choice for traveling small and light. The bags on backcountry.com display a temperature rating in the title. This is the EN, or European Norm, rating which is a standard used throughout the industry. This number is used to give you an idea of the lowest temperature at which the bag will keep you warm.

Down:

Down bags have a fill rating that indicates the amount of volume one ounce of down occupies. The higher the fill-rating, the loftier the down. It provides more warmth with less weight.

Shape:

Mummy-shaped bags taper towards your feet to reduce volume and hold warmth closer to your body. These bags can feel restrictive to some. A semi-rectangular bag can offer more room to move.

Moisture Management:

Down insulates less when wet. Some bags feature hydrophobic treatments on the outer fabric or on the down itself (like DriDown) to keep the down insulation dry.