Thermarest Saros 20 Synthetic Sleeping Bag Regular Blue

out of stock
Article code P-14171
The three-season Saros sleeping bag is the perfect choice for backcountry trips that start with a shaky forecast. It uses an eraLoft™ synthetic insulation, which is quick-drying and weather resistant, making it ideal for backpacking and mountaineering.
Weight 3 lbs 8 oz / 1.59 kg
Temperature 20° F / -6° C
EN Rating - Comfort 31° F / 0° C
EN Rating - Lower Limit 20° F / -6° C
Shoulder Girth 63 in / 160 cm
Hip Girth 61 in / 156 cm
Foot Girth 46 in / 117 cm
Stuff Sack
Fill Material eraLoft Poly Hollow Fiber, Thermacapture Seams
Fill Weight 2 lbs 7 oz / 1.13 kg
Lining 20D Polyester Taffeta
Shell Fabric 20D Polyester Ripstop w/DWR

To keep the Saros efficient, we built in ThermaCapture Seams to boost the bag's warmth without adding extra bulk. Our SynergyLink Connectors also integrate the Saros with your mattress 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. Stuff sack and storage sack included.



SynergyLink™ Connectors

Integrate the bag with a mattress for optimal comfort and efficiency; removable for versatility. These straps integrate your mattress and sleeping bag to minimize heat loss and keep you secure through the night.


Our proprietary reflective coating radiates heat back to your body and prevents heat loss, saving you energy for tomorrow's adventure. Trap radiant body heat and retain warmth without adding bulk or weight.

Zoned Insulation

Intentionally placed eraLoft synthetic insulation puts fill exactly where you need it, maximizing thermal properties while reducing weight.

Toe-asis™ Foot Warmer

A baffled pocket of insulation helps rapidly warm cold feet inside our ergonomic footbox.

Quilt & Blanket Loops

Most of our bags are equipped with quilt and blanket loops, allowing you to securely attach extra insulation to customize your sleep system. 

Additional features: Heat-trapping draft collar, full-length zipper draft tube, snag-free zipper, cinchable hood and external zip pocket.