13167 13167 13167

Saros™ 0F/-18C Sleeping Bag

Saros™ 0F/-18C Sleeping Bag

Small
Regular
Long

To keep freezing conditions at bay, the Saros uses synthetic eraLoft™ insulation for cozy warmth.

  • 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.
  • Removeable ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system. SynergyLink Connectors function best with regular sized sleeping pads that are 3 inches thick or less when inflated.
  • Maximizes warmth and saves weight by intentionally placing fill where you need it most.
  • 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.
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 , 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 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.

This product cannot be sold or shipped to customers in the state of New Jersey

  Small Regular Long
SKU 13167 13168 13169
Color Stargazer Stargazer Stargazer
Country of Origin China China China
Fill material eraLoft Polyester Hollow Fiber eraLoft Polyester Hollow Fiber eraLoft Polyester Hollow Fiber
Fill weight (Metric) 1.61 kg 1.82 kg 2.00 kg
Fill weight (Standard) 3 lb 9 oz 4 lb 4 lb 7 oz
Fits (Metric) 168 cm 183 cm 198 cm
Fits (Standard) 66 in 72 in 78 in
Girth, Foot box (Metric) 112 cm 117 cm 130 cm
Girth, Foot box (Standard) 44 in 46 in 51 in
Girth, Hip (Metric) 147 cm 155 cm 163 cm
Girth, Hip (Standard) 58 in 61 in 64 in
Girth, Shoulder (Metric) 147 cm 160 cm 168 cm
Girth, Shoulder (Standard) 58 in 63 in 66 in
Height (Standard) 5.5 in 5.5 in 5.5 in
Length (Standard) 73 in 80 in 85 in
Lining fabric 20D Polyester Taffeta 20D Polyester Taffeta 20D Polyester Taffeta
Packed dimension (Metric) 28 x 30 28 x 30 28 x 30
Packed dimension (Standard) 11 x 12 11 x 12 11 x 12
Recommended Temperature Comfort (C) -10 -10 -10
Recommended Temperature Comfort (F) 14 14 14
Recommended Temperature Limit (C) -18 -18 -18
Recommended Temperature Limit (F) 0 0 0
Shell fabric 20D Polyester w/ DWR 20D Polyester w/ DWR 20D Polyester w/ DWR
Weight (Metric) 1.96 kg 2.24 kg 2.37 kg
Weight (Standard) 4 lb 5 oz 4 lb 15 oz 5 lb 4 oz
Width (Standard) 29 in 31.5 in 33 in
What is the Better Sleep Guarantee?
All Therm-a-Rest sleeping bags and quilts are also covered by our Better Sleep Guarantee. When you wake up on a Therm-a-Rest sleeping bag or quilt, we're confident you'll wake up feeling better than ever. If you are not completely satisfied, return it within three months with the original receipt of purchase and we will give you a full refund- no questions asked.
Why are Therm-a-Rest® sleeping bags so great for side sleepers?
Therm-a-Rest® sleeping bags are designed to accommodate a wide range of sleep positions. Therm-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 and decreasing overall weight. In addition, the placement of our SynergyLink connectors is optimized to keep the mattress secure while you roll, yet allow the head and foot of the bag to rotate 90-degrees in either direction, following you for maximum comfort and warmth.
What is eraLoft synthetic insulation?
Therm-a-Rest® sleeping bags use a unique synthetic insulation that incorporates the best characteristics of both short and long staple insulation. Our EraLoft™ synthetic insulation uses three distinct fibers to create a structure that is lightweight, compressible, warm and durable. The hollow fibers are highly resistant to water and provide warmth even when wet. The insulation is built into Therm-a-Rest® sleeping bags using shingle construction, a configuration that minimizes heat loss and provides the most efficient performance.
How warm is my sleeping bag and what is the EN/ISO Standard?
The new ISO standard has made a few updates to the previous EN rating system. All Therm-a-Rest sleeping bags have been adhering to the most updated standards and tested in our on-site cold chamber. For more info on the EN/ISO testing, head over to our blog.
Is your down ethically sourced?

Therm-a-Rest actively supports industry-wide efforts to ensure all down-filled products are made with the least harm possible. We are opposed to inhumane practices and actively work with peers across all industries to improve the treatment of geese. Our product development team plays an active role in the Outdoor Industry Association (OIA) and its Textile Exchange Materials Traceability Working Group (TEMTWG). Our team also serves on the TEMTWG Down Task Force, working to address key issues in the down and feather industry and manufacturing supply chain.

To learn more about OIA Working Groups visit: www.outdoorindustry.org/resources.working

How should I store my sleeping bag?
Sleeping bags should be stored dry and loose (not compressed) in order to extend the life of the bag. All Therm-a-Rest® sleeping bags come with a storage sack well suited for long term storage. For short-term storage or when shipping, use the compression sack to save space.
How do I clean my Therm-a-Rest® sleeping bag?

Follow the care instructions below to help maintain the high quality and extend the life of your down or synthetic Therm-a-Rest® sleeping bag.

 

Hydrophobic Down Care Instructions:

All hydrophobic down treatments wash out over time, and washing is hard on all down. Extend the life of your bag by spot cleaning with a damp sponge, and only machine washing when necessary.

Washing

Hand wash or machine wash in a large capacity, front loading washing machine, using 3 oz. of Nikwax® Down Wash™. Select cold water and a gentle/delicate cycle with two rinses. We recommend an additional spin cycle as well to extract as much water as possible before drying.

DO NOT dry clean. DO NOT bleach. DO NOT iron.

Drying

Hang dry your bag whenever possible. This can be a long process (24-48 hours or more), but this is by far the best way to get the longest life from your down. Use a well-ventilated, low-humidity environment. Hand-tease or shake out your bag gently to break-up down clumps, and flip it often to help speed the process.

If you need to dry your bag faster, tumble dry in a large dryer on low heat. As your bag gets drier, it will begin to loft and can actually fill the dryer chamber, preventing it from tumbling. This can cause hot spots and even melt the bag's shell, so check it often for overheating and visually inspect frequently to make sure it's tumbling. When you check it, feel for clumps of wet down and either shake the bag gently or hand-tease the clumps apart to redistribute down. Throwing in 3-5 tennis balls can help agitate the bag, breaking up those wet down clusters to speed dry times.

 

Nikwax® Hydrophobic Down Treatment and Re-Treatment

Use Nikwax® Down Proof to restore your down's hydrophobic properties. Specially formulated to renew the Nikwax Hydrophobic Down treatment, it can also be used to provide improved water-resistance to any down bag. Follow directions on the bottle.

Storage

The less time your sleeping bag is compressed, the longer it will serve you by maintaining the loft necessary to keep you warm. Store your sleeping bag loose, in a cool, dry place. If you must store it in a bag, use the extended storage sack it came in, or something even larger. Never use a waterproof bag for long-term storage.

 

Eraloft Insulation Care Instructions:

Washing

Hand wash or machine wash in large-capacity, front loading washing machine. Use a mild, non-detergent soap. Select cold water and a gentle cycle with two rinses.

DO NOT dry clean. DO NOT bleach. DO NOT iron.

Drying

Hang dry your bag whenever possible. This can be a long process (24-48 hours), but this is by far the best way to get the longest life from your bag. Use a well-ventilated, low-humidity environment. Unzip fully and flip it often to help speed the process.

If you need to dry your bag faster, tumble dry in a large dryer on low heat. As your bag gets drier, it will begin to loft and can actually fill the dryer chamber, preventing it from tumbling. This can cause hot spots and even melt the bag's shell, so check it often for overheating and visually inspect frequently to make sure it's tumbling.

Storage

The less time your sleeping bag is compressed, the longer it will serve you by maintaining the loft necessary to keep you warm. Store your sleeping bag loose, in a cool, dry place. If you must store it in a bag, use the extended storage sack it came in, or something even larger. Never use a waterproof bag for long-term storage.

Are Therm-a-Rest sleeping bags under warranty?
Therm-a-Rest® offers a Limited Lifetime Warranty for most products including all sleeping bags. Your sleeping bag is guaranteed without time limit against defects in materials and workmanship. We also offer repair services for damages not covered under warranty. Learn more about Therm-a-Rest® Warranty & Repair.
What is WarmZip™?
WarmZip is a sleeping bag design innovation found on the Boost 650 that empowers you to customize the shape and warmth of your bag. It’s a zipper that runs on the top of the sleeping bag, up the center from footbox to chest.
What does WarmZip do?
When WarmZip is open (zipped down), the bag is a spacious, semi-rectangular shape. When it’s closed (zipped up), the bag converts to a mummy shape. Closing WarmZip adds up to 10°F/6°C of warmth to the sleeping bag.
Does the Boost 650 have two EN/ISO temperature ratings?
No. The Boost 650 has one EN/ISO temperature rating, and it rates the Boost in its default, semi-rectangular shape. We exhaustively tested WarmZip and can confidently say that it adds warmth, but the data collected from those tests cannot be used to determine an EN/ISO temperature rating. For a more detailed explanation, check out this blog article.
How does WarmZip™ add warmth?
WarmZip converts the sleeping bag into a more thermally efficient mummy shape, decreasing dead air inside the bag and holding the bag’s insulation closer to your body. A key WarmZip effect is pulling the insulation of a wider semi-rectangular bag into a narrower space, resulting in a thicker, and therefore warmer, layer of insulation on top of the body. For an in-depth look at the WarmZip effect, check out this blog article.
Why were ThermaCapture Linings removed from Therm-a-Rest sleeping bags?
For environmental and manufacturing reasons, we decided to remove the ThermaCapture linings from our sleeping bags. After reviewing the cost-benefit of putting the material in our bags, we could no longer justify the environmental and logistics cost. The sleeping bag specifications will see minimal changes if any and the bags will remain under the Better Sleep Guarantee.
Why should I consider using a Therm-a-Rest quilt?
Using a quilt can save you weight, allow for multiple sleep positions and versatility to your sleep system. To learn more by checking out our blogs on Backpacking With A Quilt and Understanding The Underestimated Camp Quilt.

Limited Lifetime Warranty

Every piece of Therm-a-Rest gear is designed to endure the rigors of your time in the backcountry. We offer a Limited Lifetime Warranty on all products, except electronic devices, which have a 2-year Limited Warranty.

To get your gear repaired, start a warranty claim or to learn more, visit Therm-a-Rest Warranty for more info.

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