Centari™ 0F | -18C | Synthetic Sleeping Bag

The Centari sleeping bag is the ultimate solution for backcountry travelers who want to be prepared for any weather and temperatures as low as 0F (-18C). EraLoft synthetic insulation is light, compressible and provides a high degree of warmth in even the wettest conditions. The unique shape offers both room to turn and roll over comfortably, and thermal efficiency that keeps you warm all night long.

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  • 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.
  • All-Weather Warmth: Proprietary eraLoft™ synthetic insulation is light, compressible and performs in wet conditions.

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

Alpha Centari is a system of three stars seen as one very bright object in the night sky.

  • 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 Centari features box-baffled and shingled 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.
  • EraLoft™ is a proprietary blend of three synthetic fibers that provides superior warmth, loft and durability. Short, soft fibers trap warmth, long fibers create loft and medium-length fibers provide structure and water resistance.

View our Sleeping Bag Comparison Chart

View specs in printer-friendly format
Weight3 lbs 15 oz / 1.8 k4 lbs 7 oz / 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
Width32 in / 81 cm32 in / 81 cm
Length75 in / 191 cm82 in / 208 cm
Packed dimension9 x 18 in / 17 Liters9 x 18 in / 17 Liters
EN Comfort-5 C / 23 F-5 C / 23 F
EN Limit-12 C / 11 F-12 C / 11 F
EN Extreme-31 C / -24 F-31 C / -24 F
Fill weight3 lbs / 1350 g3 lb 3 oz / 1446 g
Liner fabric50D Polyester50D Polyester
Shell fabric30D Polyester with DWR30D Polyester 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.

Made in China

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