Thermarest Z Questar 20F/-6C Sleeping Bag

A proven four-season down bag with a full suite of Therm-a-Rest comfort features, the Questar 20°F/-6°C steps up from its three-season sibling with more fill and a lower temperature rating for late-season and winter backcountry use across Canada.

The fill is 650-fill Nikwax Hydrophobic Down, RDS certified and PFC-free, absorbing 90% less water and drying three times faster than untreated down. Box baffled construction uses mesh walls to maximise loft and eliminate cold spots, while Zoned Insulation concentrates fill over your core and shoulders where heat retention matters most and scales it back where your sleeping pad handles the work underneath. The W.A.R.M. fit was developed and tested in Therm-a-Rest's onsite cold chamber, delivering genuine room for multiple sleep positions without compromising thermal efficiency on cold nights. The Toe-asis foot pocket warms cold feet quickly by concentrating insulation in the footbox.

SynergyLink Connectors keep the bag anchored to your sleeping pad through the night for a sleep system that moves with you, and they detach when you'd rather use the bag on its own. Quilt and blanket loops allow layering with additional Therm-a-Rest pieces when conditions push toward the lower end of the rating. Available in three sizes fitting both men and women.

• Temperature rating: 20°F/-6°C
• Fill: 650-fill Nikwax Hydrophobic Down (RDS certified, PFC-free)
• Absorbs 90% less water, dries 3x faster than untreated down
• Construction: Box baffled with mesh walls
• Fit: W.A.R.M. (With Additional Room for Multiple positions)
• Zoned Insulation for targeted warmth efficiency
• SynergyLink Connectors for pad integration (removable)
• Toe-asis foot warmer pocket
• Quilt and blanket loops for system layering
• Features: draft collar, zipper draft tube, snag-free zipper, cinchable hood, external zip pocket
• Includes compression sack and storage sack