Altair™ 0F | -18C | Down Sleeping Bag

Ski touring and mountaineering demand a down sleeping bag that is comfortable in the coldest months of the year. The Altair sleeping bag is designed to provide efficient warmth down to 0F (-18C), while offering light, packable performance that makes each day in the mountains more enjoyable. Like all Therm-a-Rest sleeping bags, it integrates with your mattress to eliminate the sliding, twisting and cold spots that can interrupt sleep.

  • Sleep Securely: SynergyLink Connectors bring your sleeping bag and mattress together for uninterrupted sleep.
  • Sleep Warmer: Zoned Insulation puts fill where you need it most, for efficient warmth.
  • Move Freely: Our Efficient Comfort design gives you room to move where you need it, without creating too much space to heat efficiently.
  • Carry Less: Lightweight, 750+ fill goose down offers compressible warmth.

FEATURES:
Draft Tubes & Collar, Snag Free Zipper, Stash Pocket, Sculptured Hood, Trapezoidal Footbox, Storage & Stuff Sack

Altair is the twelfth brightest star in the night sky, and is used in celestial navigation.

  • Sleeping Bag SynergyLink ConnectorsTwo flexible fabric bands keep your bag centered on your mattress. They eliminate problems with sliding, twisting and cold spots, yet still allow the head and foot to rotate freely and follow you just as they should. SynergyLink™ Connectors fit any mattress up to 25 inches (63 cm) wide.
  • Sleeping Bag Zoned InsulationThe Altair features box-baffled insulation on the top and sides to trap rising heat, with sewn-through insulation on the bottom to reduce drafts in extreme cold. This Zoned Insulation works with your mattress to provide maximum insulation, while eliminating extra fill that is typically compressed, adding little insulation value.
  • Sleeping Bag freedom of movementTherm-a-Rest sleeping bags are designed with extra room in the torso to allow your shoulders, elbows and hips to move freely. At the head and foot the fit is closer, keeping you warm while decreasing overall weight.
  • Lightweight 750+ fill goose down insulation provides optimal warmth and compressibility. A 30D ripstop nylon shell offers lightweight performance and durable water-repellant (DWR) protection.

Made in China

View our Sleeping Bag Comparison Chart

View specs in printer-friendly format
RegularLong
ColorBlueBlue
Weight2 lbs 7 oz / 1.12 k2 lbs 10 oz / 1.2 k
Fits6 ft / 183 cm6 ft 6 in / 198 cm
Girth, Shoulder62 in / 158 cm64 in / 163 cm
Girth, Hip58 in / 147 cm60 in / 152 cm
Girth, Foot box40 in / 102 cm40 in / 102 cm
Width30 in / 76 cm30 in / 76 cm
Length75 in / 190 cm84 in / 213 cm
Packed dimension8 x 18 in / 15 Liters8 x 18 in / 15 Liters
EN Comfort-5 C / 24 F-5 C / 24 F
EN Limit-11 C / 12 F-11 C / 12 F
EN Extreme-31 C / -23 F-31 C / -23 F
Fill750+ Goose Down750+ Goose Down
Fill weight1 lb 4 oz / 580 g1 lb 7 oz / 640 g
Liner fabric30D Nylon30D Nylon
Shell fabric30D Nylon Ripstop with DWR30D Nylon Ripstop with DWR
Zipper sideLeftLeft
Country of OriginMade in ChinaMade in China

Temperature Ratings

Therm-a-Rest sleeping bags are rated to both US and European Norm (EN 13537) standards. All ratings are developed from procedures and testing conducted by independent organizations in the US and Europe. Sleeping bags and blankets without hoods are not subjected to EN testing.

  • EN Comfort: At this temperature, a standard woman can sleep comfortably in a relaxed position.
  • EN Limit: The lowest temperature at which a standard man will be able to sleep comfortably through the night. This rating is relatively close to those commonly used in North America.
  • EN Extreme: At this temperature, a standard woman can survive for at least six hours.

Quantity:

Available for U.S. addresses only.

Find the nearest stores that have stocked this product within the last six months by simply entering the city, state abbreviation, or postal code, and then clicking GO. We suggest you call the stores listed to confirm availability of the gear you want.




 

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