Feathered Friends Eider ES Sleeping Bag
Best premium winter insulation for serious cold weather mountaineers.
Designed for extreme cold, this spacious mummy bag balances high-loft insulation with a waterproof-breathable shell. It offers ample room for layering, making it an ideal choice for mountaineers and winter campers who need reliable warmth without sacrificing mobility.
$959.00
More Eider options
Who it's for
- Alpinists seeking maximum warmth without a heavy pack
- Winter campers facing damp conditions or heavy tent condensation
- Discerning explorers who prioritize long-term durability and craftsmanship
Who should skip it
- Budget-conscious hikers who only camp in mild conditions
- Side sleepers or individuals who prefer extra room to move
- Casual users wanting a low-maintenance gear setup
Performance breakdown
Thermal Efficiency
900-fill down and continuous baffles create an impenetrable heat-trapping fortress.
Moisture Management
Electrospun panels and waterproof shell effectively combat internal condensation and external dampness.
Interior Volume
Wide mummy cut offers rare, comfortable room for layering in extreme cold.
Weight-to-Warmth Ratio
High-loft down provides elite insulation without excessive bulk or heavy weight.
Draft Protection
The robust draft tube and contoured hood seal out freezing air completely.
Packability
Substantial insulation requires significant space, even when compressed to 23 liters.
Key Specs
Temperature Rating
-10 degrees Fahrenheit
Fill Power
900+ Goose Down
Weight
3.52 lbs
Shell Material
Pertex Shield EX and Pertex Shield Air
Lining Material
NetPlus recycled nylon
Zipper Location
Left side
Water Resistant
Yes
Compressed Volume
23 Liters
Max User Height
78 inches
Sleeping Bag Shape
Mummy
Know before you buy
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