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Thermarest - Oberon™ 0F/-18C Sleeping Bag

$511.96 $639.95

Thermarest Oberon™ 0F/-18C Sleeping Bag

  • 800-fill-power Nikwax Hydrophobic Down™ dries 3 times faster than untreated down without using dangerous PFCs
  • SynergyLink™ Connectors integrate the bag with a mattress (not included) for optimal comfort and efficiency; removable for versatility
  • Zoned insulation maximizes warmth and saves weight by intentionally placing fill where you need it most, using 60% of the fill on top and 40% on the bottom
  • Toe-asis™ baffled pocket of down insulation helps rapidly warm your cold feet inside the ergonomic footbox
  • Quilt and blanket loops let you customize your sleep system by layering quilts or tech blankets (not included) for increased warmth
  • Shell fabric has been treated with a durable water repellent (DWR) to resist moisture
  • Heat-trapping draft collars, full-length zipper draft tubes, differential cut, snag-free zipper, cinchable hood and external zip pocket
  • Storage sack and compression stuff sack included
  • Responsible Down Standard certification ensures that the waterfowl in the down supply chain are treated humanely


Technical Specs
Best Use


Tested Lower Limit

0 degrees (F) - ISO

Tested Comfort

14 degrees (F) - ISO

Temperature Rating (F)

0 degrees (F)

Temperature Rating (C)

-18 degrees (C)


Ripstop polyester

Zipper Location


Insulation Type


Water-Resistant Down



800-fill-power Nikwax Hydrophobic goose down


Polyester taffeta

Sleeping Bag Shape


Stuff Sack Size

10 x 17 inches

Stuff Sack Volume

11 liters

Compressed Volume

9.7 liters




Down certified to the Responsible Down Standard (RDS)