Lightest for warmth
Images: Cumulus and its retailers. Used for product identification.
Cumulus
Cumulus Panyam 450
Polish-made 850 FP goose-down bag that undercuts the big brands; ships from Poland.
- Weight
- 810 g
- Comfort
- 0 °Cbrand's own figure
- Packed
- 26 × 18 cm, 6 L
Best price found
£289
at Cumulus · In stock · Ships from Poland · Direct from maker
Prices checked 31 October 2026. We may earn a commission on these links.
- 850 FP down
- Box-wall baffles
- Two-way zip
Specifications
- Weight
- 810 g
- Packed size
- 26 × 18 cm, 6 L
- Comfort
- Comfort 0 °C / limit -6 °C
- Fill
- 850 FP goose down, 450 g fill
- Shell & construction
- Pertex Quantum 29 g/m², 15-denier ripstop nylon with DWR…; Trapezoid chambers with differential cut
- Rating Standard
- Standard not stated by Cumulus
- Fill Note
- 850 FP Polish goose down described as 'ethically sourced'. No RDS certification…
- Zip
- Full-length 5 mm YKK zip with two self-locking sliders…
Pros & cons
- Very light for a 0 °C comfort bag with 450 g of 850 FP down
- Good build quality and warmth for the price
- Full-length two-way zip and adjustable collar give more versatility than most ultralight bags
- Zip can occasionally stick and the hood cord was found fiddly
- Only owner reviews found; no major UK magazine test located
Sources for this product
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- Comfort
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- Packed
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- Weight
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- Comfort
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- Packed
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- Weight
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- Comfort
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- Packed
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- 850 FP down
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