The Sea to Summit Spark SP-II is one of the lightest bags on the market, designed for ultralight backpacking. It features premium goose down with high fill power and a minimalist design. Perfect for summer and early fall treks.
Variants 2
Specifications
Comfort Temperature
7 °C
Limit Temperature
-2 °C
Extreme Temperature
-12 °C
Temperature Rating Standard
EN/ISO 23537 tested
Season Rating
3-season
Total Weight
1.02 lb (464 g)
Fill Weight
9.9 oz (280 g)
Packed Volume
0.77 gal (2.9 l)
Insulation Type
Goose down
Fill Power
850
Fill Power Standard
US standard
Down/Feather Ratio
90/10
Hydrophobic Down
✓
Shape
Mummy
Baffle Construction
Box baffle
Baffle Orientation
Mixed
Zipper Side
Right
Zipper Length
Half length
Two-Way Zipper
✓
Shell Fabric
10D ultralight nylon
Shell Denier
10 D
Liner Fabric
15D nylon soft touch
Water Resistance
DWR treated
Draft Collar
✓
Draft Tube
✓
Stuff Sack Included
✓
Storage Sack Included
✓
Size Category
Regular
Maximum User Height
6.1 ft (185 cm)
Gender-Specific Fit
Unisex
RDS Certified Down
✓
PFC/PFAS Free
✓
Warmth-to-Weight Ratio f(x)
4.3 °C/kg
Fill Efficiency f(x)
0.71 °C/100g
Weight per Degree f(x)
232 g/°C
Bag Type
Mummy sleeping bag
Where to buy
No offers available for this product yet.
Category context Sleeping Bags (378 products)
Weight
Ultralight· mainstream zone 768–1380 g· ranked 24 of 378