Weight
Expedition weight· mainstream zone 768–1380 g· ranked 351 of 378
Comfort Temperature
-30 °C
Limit Temperature
-40 °C
Temperature Rating Standard
Manufacturer rated
Season Rating
5-season (expedition)
Sea to Summit Alpine Down Winter Sleeping Bag -40
Sea to Summit Alpine Down Winter Sleeping Bag -40
by Sea to Summit
4.12 lb Total Weight
-30 °C Comfort Temperature
850 Fill Power
Sea to Summit Brand
In category: Heavier than 7% of items· ranked 351 of 378
Specifications
Draft Collar
✓
Draft Tube
✓
Hood Type
3D anatomical
Stuff Sack Included
✓
Size Category
Regular
Maximum User Height
6.0 ft (182 cm)
Gender-Specific Fit
Unisex
RDS Certified Down
✓
Recycled Materials
✓
PFC/PFAS Free
✓
Warmth-to-Weight Ratio f(x)
21.4 °C/kg
Fill Efficiency f(x)
3.2 °C/100g
Weight per Degree f(x)
46.8 g/°C
Bag Type
Mummy sleeping bag
Where to buy
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