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About the Product

When the weather gets frigid and the forecast looks damp, the Saros 0F/-18C is equipped to keep you resting better. The Saros uses Therm-A-Rest's 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 the onsite cold chamber to create Therm-A-Rest's W.A.R.M. fit that allows room for multiple sleep positions without compromising thermal efficiency. The 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 two sizes and designed to fit both men and women. Compression sack and storage sack included.


  • Regular Foot Box Girth: 46in
  • Regular Hip Girth: 61in
  • Regular Shoulder Girth: 63in
  • Long Foot Box Girth: 51in
  • Long Hip Girth: 64in
  • Long Shoulder Girth: 66in
  • Height: 5.5in
  • Regular Length: 80in
  • Long Length: 85in
  • Regular Width: 31.5in
  • Long Width: 33in
  • Dimensions: 11 x 12
  • Fabric: 20D Polyester with DWR
  • Regular Weight: 4lbs, 15oz
  • Long Weight: 5lbs, 4oz
  • EraLoft Insulation is efficient and compressible, water resistant synthetic fill
  • W.A.R.M Fit means this bag allows for various natural sleeping positions while maintaining thermal efficiency
  • SynergyLink connectors. removable ultralight straps create a secure bag to sleeping pad connection
  • Zoned insulation maximizes warmth and saves weight
  • Toe-asis foot warmer pocket that rapidly warms cold feet in a pocket of warm insulation
  • Quilt and blanket loops allows you to layer quilts or tech blankets for increased warmth
  • Heat-trapping draft collar
  • Full-length zipper draft tube
  • Snag-free zipper, cinchable hood and external zip pocket
  • Compression sack and storage sack included
  • 0F/-18C temperature rating
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