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Therm-a-Rest Saros -7C Synthetic Sleeping Bag

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The Saros sleeping bag is the perfect choice for backcountry trips that start with a shaky forecast. EraLoft synthetic insulation offers warmth and weather resistance that's ideal for canoeing, kayaking, backpacking and mountaineering in wet weather and temperatures down to 20F (-7C). A direct connection to your mattress, created with SynergyLink Connectors, ensures you stay warm and comfortable
all night long.

  • 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

Saros is a period of time used to predict an eclipse of the sun or moon.

Color Blue Blue
Weight 2 lbs 15 oz / 1345 g 3 lbs 3 oz / 1460 g
Fits 6 ft / 183 cm 6 ft 6 in / 198 cm
Girth, Shoulder 62 in / 158 cm 64 in / 163 cm
Girth, Hip 58 in / 147 cm 60 in / 152 cm
Girth, Foot box 40 in / 102 cm 40 in / 102 cm
Width 30 in / 76 cm 30 in / 76 cm
Length 76 in / 193 cm 82 in / 208 cm
Packed dimension 8 x 18 in / 15 Liters 8 x 18 in / 15 Liters
EN Comfort 1 C / 30 F 1 C / 30 F
EN Limit -5 C / 23 F -5 C / 23 F
EN Extreme -22 C / -8 F -22 C / -8 F
Fill eraLoft eraLoft
Fill weight 1 lb 15 oz / 879 g 2 lbs 4 oz / 1024 g
Liner fabric 50D Polyester 50D Polyester
Shell fabric 30D Polyester with DWR 30D Polyester with DWR
Zipper side Left Left
Country of Origin Made in China Made 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.