The Marmot Paiju 10° is a winter expedition bag built for genuinely cold conditions — EN ISO 23537 testing puts comfort at -6°C, limit at -13°C, and the extreme rating at -33°C, positioning it for high-altitude or winter terrain rather than general three-season trekking. The fill is RDS-certified goose down at 800 fill power, and at 1,170 g that works out to 90 g per degree of warmth — a solid figure for a winter bag, though the down isn't hydrophobic-treated, so it tolerates moisture less well than models with Down Defender-style finishes.
The Pertex Quantum Air ripstop shell with DWR treatment keeps weight down while holding up to wind. A fitted, contoured hood, a draft collar, and a full-length draft tube are standard winter-bag features here, backed by an interior pocket. It's cut as a men's-specific fit; no stuff sack is included, but a roomier storage sack is — sensible for down, which shouldn't be stored compressed long-term.
Built for hikers up to 182 cm who need a dependable cold-weather bag with traceable down sourcing.
Specifications
Comfort Temperature
-6 °C
Limit Temperature
-13 °C
Extreme Temperature
-33 °C
Temperature Rating Standard
EN/ISO 23537 tested
Season Rating
4-season (winter)
Total Weight
1170 g (2.58 lb)
Packed Size ( Length x Diameter )
53 x 15 (1.7 x 5.9 ft)
Insulation Type
Goose down
Fill Power
800
Fill Power Standard
US standard
Shape
Mummy
Zipper Side
Left
Zipper Length
Full length
Two-Way Zipper
✓
Shell Fabric
Pertex Quantum Air ripstop nylon
Water Resistance
DWR treated
Draft Collar
✓
Draft Tube
✓
Hood Type
Fitted/contoured
Internal Pocket
✓
Storage Sack Included
✓
Size Category
Regular
Maximum User Height
182 cm (6.0 ft)
Gender-Specific Fit
Men's specific
RDS Certified Down
✓
PFC/PFAS Free
✓
Warmth-to-Weight Ratio f(x)
11.1 °C/kg
Weight per Degree f(x)
90 g/°C
Bag Type
Mummy sleeping bag
Where to buy
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Category context Sleeping Bags (417 products)
Weight
Standard weight· mainstream zone 819–1420 g· ranked 235 of 418