Cumulus The Quilt 600 vs Feathered Friends Hummingbird YF 30°F
Weight and specs compared for 2026 — and which one to choose.
Four-season ultralight quilt with 600g 800-fill power hydrophobic goose down. Premium 7D Toray Airtastic ripstop shell. Exceptional warmth-to-weight for winter...
Full details →Ultralight 950-fill down bag rated to 30°F (-1°C).
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Cumulus The Quilt 600 vs Feathered Friends Hummingbird YF 30°F: which should you buy?
If saving weight is your priority, the Feathered Friends Hummingbird YF 30°F wins — at 510 g it is 295 g (37%) lighter than the Cumulus The Quilt 600 (805 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest sleep system page, or browse the full gear weight database.