Soft underfeathers from ducks or geese. The gold standard for insulation, offering the best warmth-to-weight ratio of any fill material.
Score Breakdown
How long the fabric lasts with regular use
Softness, feel against skin, wearability
Air flow and ventilation
Heat retention and insulation
Ability to pull sweat away from skin
Environmental impact of production and disposal
How easy it is to wash, dry, and maintain
Best For
Good warmth (98) for cold weather
Good comfort (85) and breathability (70) for sleeping
Good breathability (70) and comfort (85) for undergarments
Detailed Use Case Scores
Pros
- ✓ Best warmth-to-weight ratio
- ✓ Very compressible
- ✓ Long-lasting if maintained
- ✓ Natural and breathable
Cons
- ✗ Loses insulation when wet
- ✗ Ethical concerns
- ✗ Expensive
- ✗ Requires special washing
Care Guide
Special Notes
• Use down-specific detergent
• Tumble dry with clean tennis balls to restore loft
• Ensure completely dry before storing to prevent mildew
Additional Care Tips
- • Machine wash cold on gentle cycle with down-specific detergent (never regular detergent — it strips natural oils)
- • Tumble dry on low heat with 2-3 clean tennis balls to break up clumps and restore loft
- • Ensure completely dry before storing — trapped moisture causes mildew and odor
- • Store uncompressed in a large breathable cotton bag; never in a stuff sack long-term
- • Avoid dry cleaning — the solvents can strip the natural oils from down clusters
- • Spot clean minor stains with a damp cloth to extend time between full washes
Cost
$$$$$
Premium
Shrinkage
Won't shrink with normal washing
Eco Rating
Moderate impact — consider eco alternatives