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Our warmest expedition bag, the Inferno -40F/-40C, is made with recycled exterior fabric that offers top-level performance.

Features:-
100% recycled main body material is light, durable and coated in aluminized XReflex™ for higher thermal retention
Full draft collar and integrated draft overlap for comfort and to prevent heat loss
Side half zipper so the sleeper can adjust for temperature
Shockcord pad attachment on back of bag
Hood cinch-cord seals out the cold
Fitted hood for more warmth and comfort
Main body—made with recycled nylon—is light, durable and coated in aluminized XReflex™ for higher thermal retention
Anti-compression pads for better clo values
Full draft collar and integrated draft overlap for comfort and to help prevent heat loss
Vaulted footbox
Compression sack and storage sack included
Trapezoidal side-chamber baffles reduce cold spots and retain loft
Waterproof and breathable Neovent Air protects the head and footbox
Shockcords on back of the bag attach to a sleeping pad so the pad will stay in place while you sleep
Hood cinch-cord helps seal out the cold
Waterproof and breathable NeoVent Air™ fabric helps protect the head and footbox
Waterproof and breathable Neovent Air helps protect the head and footbox

Details:-

Style:
NF0A52DL

Sizes:
RRH, LRH

Total Weight:
reg - 3 lbs 9 oz (1620 g) / long - 3 lbs 11 oz (1667 g)

Temp Rating:
-40°F / -40°C

Stuffsack Size:
12'' x 12'' x 16'' (35.1 cm x 15 cm x 45.7 cm)

Main Body Fabric:
15D recycled nylon coated with aluminized XReflex™ treatment

Internal Length:
reg - 78'' (198 cm) / long - 84'' (213 cm)

Head And Footbox:
15D recycled nylon ripstop

Max User Height:
reg - 6' (183 cm) / long - 6'7'' (201 cm)

Lining:
30D nylon taffeta

Shoulder Circ:
reg - 64'' (163 cm) / long - 66'' (168 cm)

Insulation:
800 fill ProDown™; certified to the Responsible Down Standard (RDS) by Control Union

Hip Circ:
reg - 60'' (152 cm) / long - 62'' (157 cm)

Foot Circ:
reg - 44'' (112 cm) / long - 44'' (112 cm)

Head And Footbox:
15D recycled nylon ripstop with breathable coating