The Enlightened Equipment Enigma 40 850 is the lightest and warmest-weather variant of the Enigma line in this collection, carrying a manufacturer rating of 40°F (about 4°C). The trapezoidal footbox is permanently sewn closed, with no zipper or hood — the same approach used across the series, where weight is saved by omitting anything not strictly needed to hold heat at the given temperature class.
Filled with just 243 g of 850-fill-power duck down, total weight comes to only 387 g in the Short size (up to 167 cm user height) — the lightest of the 850-fill Enigma models in this collection. The 10D nylon ripstop shell is paired with a draft collar that helps prevent heat loss around the shoulders.
The down is RDS-certified, and a stuff sack and storage sack are included. The Enigma 40 850 suits summer trekking and warmer nights where minimizing weight is the priority, and also works for hikers who run cold-footed even in mild conditions, thanks to the fully closed, non-vented footbox.
Specifications
Limit Temperature
4 °C
Temperature Rating Standard
Manufacturer rated
Season Rating
3-season
Total Weight
387 g (13.7 oz)
Fill Weight
243 g (8.6 oz)
Internal Length
183 cm (6.0 ft)
Insulation Type
Duck down
Fill Power
850
Shape
Quilt
Baffle Construction
Continuous baffle
Zipper Side
None (quilt)
Zipper Length
None
Shell Fabric
10D nylon ripstop
Water Resistance
DWR treated
Draft Collar
✓
Hood Type
None
Foot Box Shape
Trapezoidal
Stuff Sack Included
✓
Storage Sack Included
✓
Sleeping Pad Attachment
✓
Size Category
Short
Maximum User Height
167 cm (5.5 ft)
Gender-Specific Fit
Unisex
RDS Certified Down
✓
PFC/PFAS Free
✓
Warmth-to-Weight Ratio f(x)
10.3 °C/kg
Fill Efficiency f(x)
1.65 °C/100g
Weight per Degree f(x)
96.8 g/°C
Bag Type
Quilt (top quilt)
Where to buy
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Category context Quilts (164 products)
Weight
Lighter than average· mainstream zone 496–703 g· ranked 18 of 164