description Therm-a-Rest Questar 20F Overview
The Therm-a-Rest Questar 20F is a fantastic all-around sleeping bag, particularly appealing to budget-conscious backpackers. It utilizes Synergy Insulation, a synthetic fill that performs well even when wet, offering reliable warmth down to 20°F. Weighing in at just under 2.5 pounds, it's relatively lightweight and packs down reasonably well. The mummy shape maximizes warmth retention, and the draft collar and zipper baffle prevent heat loss.
It's ideal for three-season camping and provides excellent value for its performance.
info Therm-a-Rest Questar 20F Specifications
| Color | Mineral / Deep Navy |
| Weight | 2 lbs 7 oz (1.1 kg) - Regular |
| Warranty | Lifetime (manufacturer defect) |
| Hip Girth | 58 inches (147 cm) |
| Fit Height | Fits users up to 6'0" (183 cm) |
| Packed Size | 8 x 15 inches (20 x 38 cm) |
| Size Options | Regular, Long |
| Fill Material | SynergyLink Synthetic Insulation (100% recycled polyester) |
| Liner Material | 30D Recycled Polyester |
| Shell Material | 30D Recycled Polyester with DWR |
| Shoulder Girth | 62 inches (158 cm) |
| Temperature Rating | 20°F / -7°C (EN 13537 tested) |
balance Therm-a-Rest Questar 20F Pro & Contro
- SynergyLink connectors integrate the sleeping bag with a pad for secure, slip-free comfort throughout the night
- Zoned insulation technology places more fill weight in critical heat-trapping areas while reducing bulk elsewhere
- Excellent wet-weather performance maintains loft and warmth even when saturated, unlike down alternatives
- Impressive 2.5 lb weight for a 20°F synthetic bag makes it suitable for multi-day backpacking trips
- Integrated pillow pocket and blanket-fold design add comfort without extra gear
- EN 13537 temperature rating provides reliable, standardized warmth information
- Synthetic insulation is approximately 20-30% heavier than comparable down fill for the same temperature rating
- Packed size (~8x15 inches) is larger than down bags, limiting compatibility with smaller packs
- Can feel overly warm during shoulder seasons or temperatures above 35°F
- Price point higher than many synthetic competitors, approaching down bag territory
- DWR-treated shell may require special care when washing to maintain water repellency
help Therm-a-Rest Questar 20F FAQ
Is the Therm-a-Rest Questar 20F true to its temperature rating?
The Questar 20F carries an EN 13537 rating, meaning it has been independently tested for accuracy. Most users report it performs at or slightly above its 20°F rating for average-sized adults sleeping on an insulated pad.
How does SynergyLink insulation compare to traditional synthetic fills?
SynergyLink uses vertical wall construction to eliminate cold spots and maximize loft efficiency. It retains warmth significantly better than loose-fill synthetics when compressed during packing and performs well in damp conditions.
Can the Questar 20F be washed in a standard washing machine?
Yes, though recommendations include using a front-loader, cold water, and a specialized cleaner like Nikwax Tech Wash. Air drying is advised to prevent melting the synthetic fibers from excessive heat.
What sleeping pad works best with the SynergyLink connectors?
Therm-a-Rest pads with SynergyLink loops (NeoAir, Traverse series) provide the most secure fit. Other brands work but may not align perfectly with the connector spacing.
Does the Questar 20F work well for side sleepers?
The mummy cut allows reasonable mobility, and the blanket-fold collar lets restless sleepers shift positions without creating ventilation gaps. However, it's optimized for back sleeping.
What is Therm-a-Rest Questar 20F?
How good is Therm-a-Rest Questar 20F?
How much does Therm-a-Rest Questar 20F cost?
What are the best alternatives to Therm-a-Rest Questar 20F?
What is Therm-a-Rest Questar 20F best for?
Budget-conscious backcountry campers and hikers who need a dependable, weather-resistant sleeping bag rated to 20°F without the premium cost or moisture sensitivity of down fill.
How does Therm-a-Rest Questar 20F compare to Camp Zero Red Wing 30 Sleeping Bag?
Is Therm-a-Rest Questar 20F worth it in 2026?
What are the key specifications of Therm-a-Rest Questar 20F?
- Color: Mineral / Deep Navy
- Weight: 2 lbs 7 oz (1.1 kg) - Regular
- Warranty: Lifetime (manufacturer defect)
- Hip Girth: 58 inches (147 cm)
- Fit Height: Fits users up to 6'0" (183 cm)
- Packed Size: 8 x 15 inches (20 x 38 cm)
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