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

5 In stock
Packed with features needed for cold-weather camping, the Questar™ offers supreme comfort and versatility.
Weight 2 lbs 9 oz 2 lbs 11 oz 3 lbs 1 oz
Width 29 in 31.5 in 33 in
Length 73 in 80 in 85 in
Thickness 5.5 in 5.5 in 5.5 in
Fits 66 in 72 in 78 in
Girth, Shoulder 58 in 63 in 66 in
Girth, Hip 58 in 61 in 64 in
Girth, Footbox 44 in 46 in 51 in
Overall Packed Dimension 8 x 10 8 x 10 8 x 10
Recommended Comfort Temperature -10C -10C -10C
Recommended Temperature Limit -18C -18C -18C
Fill material 650 Fill Nikwax Hydrophobic Down RDS
Fill weight 1 lbs 10 oz 1 lbs 13 oz 1 lbs 15 oz
Shell Fabric 20D Polyester w/ DWR
Lining Fabric 20D Polyester Taffeta

Frontenac Outfitters

Thermarest Questar™ 0F/-18C Sleeping Bag


When you need feature-packed comfort for frigid backcountry conditions, it’s time to pack the Questar 0F/-18C. We've loaded this bag with the comfort features that Therm-a-Rest bags are known for. Our SynergyLink™ Connectors integrate the bag with your sleeping pad while allowing our Zoned Insulation to keep fill where you need it most. 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. Stuffed with water-resistant 650 fill Nikwax Hydrophobic Down certified by the Responsible Down Standard, the four-season Questar is ready for your next backcountry adventure. The Questar is offered in three sizes, and designed to fit both men and women. Compression sack and storage sack included.
  • 650 fill Nikwax Hydrophobic Down™: Absorbs 90% less water and dries 3 times faster without using dangerous PFCs.
  • 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.
  • SynergyLink™ Connectors: Integrate the bag with a pad for optimal efficiency and comfort; removable for versatility.
  • Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most.
  • Box Baffled Construction: Uses mesh walls to maximize loft and minimize cold spots.
  • Toe-asis™ Foot Warmer Pocket: Ergonomic toe box that rapidly warms cold feet in a pocket of warm down.
  • Quilt and Blanket Loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth.
  • Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.
  • 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





Experience a Vastly Superior Purchasing Process
Frontenac Outfitters invites YOU to Paddle With Us
We Stock Hundreds & offer Free Test Paddling Everyday!

Ontario’s Kayak Experts since 1984