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Therm-a-Rest Saros 0F/-18C Sleeping Bag

Therm-a-Rest Saros 0F/-18C Sleeping Bag

Regular price $299.95 CAD
Regular price Sale price $299.95 CAD
Sale Sold out



Stay warm and toasty all winter in this sleeping bag.

When the weather gets frigid and the forecast looks damp, the Saros 0F/-18C is equipped to keep you resting better. The Saros uses our eraLoft™ synthetic insulation, which is quick-drying and weather resistant, making it ideal for backpacking and mountaineering in wet weather from spring to fall. The fit of the bag has been perfected in our onsite cold chamber to create our W.A.R.M. fit that allows room for multiple sleep positions without compromising thermal efficiency. Our SynergyLink™ Connectors also integrate the Saros with your pad to ensure superior comfort with efficient warmth and the freedom to move as you like for the best night's rest possible. The Saros is offered in three sizes and designed to fit both men and women. Compression sack and storage sack included.


  • eraLoft™ Insulation: Efficient and compressible, our water-resistant synthetic fill uses hollow fibers to reduce weight without sacrificing warmth.
  • W.A.R.M. Fit: With Additional Room for Multiple positions (W.A.R.M.) fit means this bag allows for various natural sleep positions while maintaining thermal efficiency.
  • SynergyLink™ Connectors: Integrate the bag with a pad for optimal comfort and thermal efficiency; removable for versatility.
  • Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most.
  • Toe-asis™ Foot Warmer Pocket: Ergonomic toe box that rapidly warms cold feet in a pocket of warm insulation.
  • Quilt and Blanket Loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth.
  • Additional features: Heat-trapping draft collar, full-length zipper draft tube, snag-free zipper, cinchable hood and external zip pocket.
  • Compression sack and storage sack included.

    Tech Specs

      Small Regular Long
    Color Stargazer Stargazer Stargazer
    Weight (Standard) 4 lbs 5 oz 4 lbs 15 oz 5 lbs 4 oz
    Weight (Metric) 1.96 kg 2.24 kg 2.37 kg
    Width (Standard) 29 in 31.5 in 33 in
    Length (Standard) 73 in 80 in 85 in
    Height (Standard) 5.5 in 5.5 in 5.5 in
    Fits (Standard) 66 in 72 in 78 in
    Fits (Metric) 168 cm 183 cm 198 cm
    Girth, Shoulder (Standard) 58 in 63 in 66 in
    Girth, Shoulder (Metric) 147 cm 160 cm 168 cm
    Girth, Hip (Standard) 58 in 61 in 64 in
    Girth, Hip (Metric) 147 cm 155 cm 163 cm
    Girth, Foot box (Standard) 44 in 46 in 51 in
    Girth, Foot box (Metric) 112 cm 117 cm 130 cm
    Packed dimension (Standard) 11 x 12 11 x 12 11 x 12
    Packed dimension (Metric) 28 x 30 28 x 30 28 x 30
    Recommended Temperature Comfort (F) 14 14 14
    Recommended Temperature Comfort (C) -10 -10 -10
    Recommended Temperature Limit (F) 0 0 0
    Recommended Temperature Limit (C) -18 -18 -18
    Fill material eraLoft Polyester Hollow Fiber eraLoft Polyester Hollow Fiber eraLoft Polyester Hollow Fiber
    Fill weight (Standard) 3 lbs 9 oz 4 lbs 4 lbs 7 oz
    Fill weight (Metric) 1.61 kg 1.82 kg 2.00 kg
    Shell fabric 20D Polyester w/ DWR 20D Polyester w/ DWR 20D Polyester w/ DWR
    Lining fabric 20D Polyester Taffeta 20D Polyester Taffeta 20D Polyester Taffeta
    Country of Origin China China China

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