Best value1 / 11
Images: Alpkit and its retailers. Used for product identification.
Alpkit
Alpkit PipeDream 400
Hydrophobic 750 FP RDS down with a -4 °C comfort rating for under £300, direct from Alpkit.
- Weight
- 770 g
- Comfort
- -4.2 °Climit -10.8 °C
- Packed
- 25 × 18 cm
Best price found
£274.99
at Alpkit · In stock · Direct from maker
Prices checked 31 October 2026. We may earn a commission on these links.
- 750 FP down
- Hydrophobic down
- RDS down
- 160 cm zip
- Draught collar
- Box-wall baffles
Specifications
- Weight
- 770 g (Long 790 g; stuff sack adds 30 g. Alpkit's description quotes 865 g, its spec table 770 g)
- Packed size
- 25 × 18 cm
- Comfort
- Comfort -4.2 °C / limit -10.8 °C
- Fill
- 750 FP duck down, 400 g fill
- Shell & construction
- 20D polyester outer with PFC-free DWR; Horizontal box-wall baffles
- Rating Standard
- EN 13537 rating
- Fill Note
- IDFB 750FP 90/10 duck down, DownTek PFC-free hydrophobic treatment, 100%…
- Zip
- 160 cm zip, full-length zip baffle
Pros & cons
- Light and warm for the weight, packs down very small
- Excellent value for a hydrophobic, RDS-certified down bag
- Soft, comfortable fabric and good warmth for its weight
- Regular length runs short; Advnture suggests Long for anyone over about 185 cm
- Single front-only shoulder baffle and no women's-specific version
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11 photosBest all-rounderMountain Equipment
Mountain Equipment Helium 400
The 3-season benchmark: 0 °C comfort at 820 g, widely stocked and often discounted.
- Weight
- 820 g
- Comfort
- 0 °Climit -6 °C
- Packed
- 24 × 21 × 20 cm
- 700 FP down
- RDS down
- Recycled fabrics
- Box-wall baffles
Full specs, 3 retailers →View DealFrom
£240
at Trekitt
Lightest for warmthCumulus
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
- 850 FP down
- Box-wall baffles
- Two-way zip
Full specs, 1 retailer →View DealFrom
£289
at Cumulus
8 photosLightestSea to Summit
Sea to Summit Spark -1 °C
A 510 g summer-to-shoulder-season bag for fast-and-light trips.
- Weight
- 510 g
- Comfort
- +4 °Climit -1 °C
- Packed
- 8 L sack, ≈ 4.5 L compressed
- 850 FP down
- Hydrophobic down
- RDS down
- Draught collar
- Box-wall baffles
Full specs, 3 retailers →View DealFrom
£270.87
at Alpinetrek
