Why We Like It

Therm-a-Rest loaded this winter bag with the performance-enhancing features Therm-a-Rest bags are known for, from SynergyLink™ Connectors to ThermaCapture™ Seams. Crafted with water-resistant 650 fill Nikwax Hydrophobic Down™ the Questar is ready for your next cold-weather adventure. The versatility and value of the Questar makes it a must-have for those looking to venture out after the temperatures drop. Storage sack and stuff sack included.


  • 650 fill Nikwax Hydrophobic Down™: Stays drier and maintains loft 60 times longer than untreated down.
  • ThermaCapture™ Seams: Traps radiant body heat and retains warmth without adding bulk or weight.
  • SynergyLink™ Connectors: Integrate the bag with a mattress for optimal comfort and efficiency; removable for versatility.
  • Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most.
  • Quilt and Blanket Loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth.
  • Toe-asis™ Foot Warmer Pocket: Ergonomic toe box that rapidly warms cold feet in a pocket of warm down.
  • Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.


  • Small: Fits 66", Weight 2 lbs 12 oz, Width 29", Length 73"
  • Regular: Fits 72", Weight 3 lbs, Width 31.5", Lenght 80"
  • Long: Fits 78", Weight 3 lbs 3 oz, Width 33", Length 85"