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Whether you’re pitching a tent with the penguins or snoozing high up in the Andes, you’ll stay warm in this spacious yet packable, four-season mummy bag that’s filled with quick-drying, water-resistant ProDown™ for comfort at any humidity level.


  • Sleeping bag insulated with water-resistant ProDown™ for warmth down to 0 degrees
  • Goose down is certified to the Responsible Down Standard (RDS) by Control Union
  • Comfort-oriented shape
  • Anti-compression layer on back composed of Heatseeker™ Eco synthetic insulation
  • Fitted hood for more warmth and comfort
  • Draft collar prevents heat loss
  • Vaulted footbox keeps feet warm

Product Specifications

Temperature Rating:
0°F / -18°CC
Lower Limit:
4°F / -16°C
17°F / -8°C
600 ProDown™
Fill Weight:
Reg:2 lbs 2 oz (964 g) / 2 lbs 5 oz (1049 g)
Total Weight:
Reg: 3 lbs 12 oz (1701 g) / Long: 3 lbs 15 oz (1786 g)
Compressed Volume:
1138 in³ (18.6 L)
Stuffed Volume:
10" x 18" (25 cm x 46 cm)
Responsible Down Standard


Certified to the Responsible Down Standard (RDS) by Control Union. The RDS ensures that our down does not come from animals that have been subject to any unnecessary harm, such as force-feeding or live-plucking, and helps track the down used in our products from farm to finished garment.

The fill power of goose down indicates two important features: the warmth-to-weight ratio and compressibility. Our products are insulated with exclusive, high-fill-power down ranging from 550 fill to 950 fill, representing the highest-quality down commercially available.

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The Furnace Collection

The Furnace Collection

Learn more about the Furnace Collection from our Product Experts

Learn more about the Furnace Collection from our Product Experts


This ProDown bag with a less-tapered cut offers more room for camping and backpacking.  Watch the video to learn more abou the Furnace Collection.


Furnace 0°F/-18°C

The Angstrom Collection

Learn more about the Angstrom Collection from our Product Experts

Improved for Spring ’17 with a lighter yet roomier design, this cold-weather mummy bag is constructed with water-resistant ProDown™, which repels water and dries faster than traditional down insulation.