Sleeping bag Thermarest Questar 0F/-18C Regular (Balsam)

Brand: Thermarest

357.00 €

(420.00 €)


Ready for low temperature camping, the Questar bag offers comfort and versatility. More details


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Ready for low temperature camping, the Questar bag offers comfort and versatility.
When you need complete comfort in freezing temperatures, choose the Questar 0F/-18C. We've incorporated the comfort features that Therm-a-Rest bags are known for into this bag. Our SynergyLink™ connectors integrate the bag and pad to ensure that our Zoned Insulation distribution technology places the insulating padding where you need it. The bag design was perfected in our in-house cold room to create our "W.A.R.M." fit with enough volume to accommodate different sleeper positions without compromising the thermal efficiency of the bag. With 650 fill Nikwax Hydrophobic Down certified to the Responsible Down Standard, the all-season Questar is ready to follow you on your adventures. The Questar bag is available in three sizes, suitable for men and women. Compression bag and storage bag included.


  • Hydrophobic 650 Nikwax Hydrophobic Down™: absorbs 90% less moisture and dries 3 times faster, without harmful perfluorinated compounds (PFCs).
  • "W.A.R.M." cut: W.A.R.M. comfort ("with extra volume for multiple positions") means you can choose a variety of natural sleeping positions while maintaining the bag's thermal efficiency.
  • SynergyLink™ Connectors: Connection to the mattress for optimized efficiency and comfort (removable for versatility).
  • Zone Insulation: Maximizes warmth and optimizes weight by precisely distributing fill where it's needed most.
  • Interior partitioning: Mesh partitions to maximize loft and minimize cold spots.
  • Toe-asis™ foot warmer section: Ergonomic foot warmer section to quickly warm chilled feet with a warm down cocoon.
  • Comforter and blanket loops: tailor your sleeping system to the conditions by adding our technical comforters or blankets to the sleeping bag for extra warmth.
  • Responsible Down Standard: guarantees that the birds from which the down is derived are treated humanely.
  • Additional features: flange to block heat loss, full-length zipper protection flap, anti-lock zipper, drawstring hood and exterior zippered pocket.
  • Compression bag and storage bag included.

Technical Specifications:

  • Balsam Color
  • Weight (standard) 2 lbs 11 oz
  • Weight (metric) 1.21 kg
  • Width (standard) 31.5 in
  • Length (standard) 80 in
  • Height (Standard) 5.5 in
  • Fit (Standard) 72 in
  • Height (metric) 183 cm
  • Shoulder circumference (standard) 63 in
  • Shoulder circumference (metric) 160 cm
  • Hip circumference (standard) 61 in
  • Hip circumference (metric) 155 cm
  • Foot circumference (standard) 46 in
  • Foot circumference (metric) 117 cm
  • Packing size (Standard) 8 x 10
  • Packing size (Metric) 20 x 25
  • Recommended comfort temperature (F) 14
  • Recommended comfort temperature (C)-10
  • Recommended Temperature Limit (F) 0
  • Recommended Temperature Limit (C) -18
  • Fill material 650 Fill Duck Nikwax Hydrophobic Down RDS
  • Fill weight (standard) 1 lbs 13 oz
  • Fill weight (metric) 0.82 kg
  • Shell Fabric 20D Polyester with DWR
  • Liner Fabric 20D Polyester Taffeta 2
  • Country of Origin: China


Expert advice


The Therm-a-Rest Questar™ 0F/-18C sleeping bag is a high quality product. After 20 nights of testing, the product has totally convinced me. Its main asset is its thermicity / weight / volume ratio. An excellent investment!

Positive points:
Compressed volume

Negative points :

Link to full test :

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