Sleeping Bags · #5
Questar 20°
Therm-a-Rest
Reader rating
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Recycled 650 down, generous cut, honest budget option for new backpackers.
Pros
- Generous cut offers superior comfort for various sleeping positions
- 650-fill Nikwax Hydrophobic Down provides reliable warmth and moisture resistance
- Good feature set, including SynergyLink Connectors and Toe-asis Foot Warmer
- Durable recycled materials stand up to regular use
- Excellent value for a full-featured down sleeping bag
Cons
- Not the lightest or most compressible option available
- 20D fabric, while durable, isn't ultra-lightweight
- May feel too roomy for very cold sleepers who prefer less air volume to heat
Best uses
- Three-season backpacking
- Comfort-first camping trips
- First serious down bag purchase
- Backpackers who move in their sleep
Specifications
- Temperature Rating
- 20°F (-6°C)
- Insulation Type
- 650-fill Nikwax Hydrophobic Down
- Shell Material
- 20D Recycled Nylon Ripstop
- Liner Material
- 20D Recycled Nylon Taffeta
- Features
- SynergyLink Connectors, Toe-asis Foot Warmer
- Packability
- Good for volume, not ultra-compact
Pricing
Manufacturer list price · checked Jul 14, 2026
Prices move with sales and stock — confirm the live offer at the retailer below.
Full catalog listing & offersBest for
Three-season backpacking, Comfort-first camping trips, First serious down bag purchase, Backpackers who move in their sleep
Where to buy the Questar 20°
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The Therm-a-Rest Questar 20° is a solid, no-nonsense sleeping bag that carves out a niche for backpackers seeking reliable three-season performance without breaking the bank. It's built with 650-fill Nikwax Hydrophobic Down, which is a good quality fill for its price point, offering a decent warmth-to-weight ratio and some added moisture resistance. Where the Questar truly shines is its generous cut and thoughtful features, making it comfortable for a wide range of sleepers who might feel constricted in more minimalist bags. This isn't the lightest or most compressible option on the market, but it’s remarkably well-rounded for its category. It serves as a strong entry point for those new to backpacking or anyone prioritizing comfort and dependable warmth over shaving every last ounce. The materials feel durable, suggesting this bag will hold up to consistent use without immediate signs of wear. While some ultra-lighters might balk at its packed size and weight, the Questar 20° positions itself as a practical and honest tool for most three-season adventures. It's often recommended as a first serious sleeping bag because it delivers on its promises without excessive complexity or a premium price tag. For those who move around a lot in their sleep, or who simply prefer a less restrictive feel, the Questar’s roomier dimensions are a distinct advantage. It sacrifices a bit of top-tier performance for broader appeal and better comfort for the average user, which, for many, is a worthwhile trade-off.
Construction and Materials
Therm-a-Rest uses a recycled 20D ripstop nylon for both the shell and liner, which feels robust without being overly stiff. The 650-fill Nikwax Hydrophobic Down is a smart choice, offering a balance of warmth, compressibility, and a crucial defense against moisture, which is often a downfall of untreated down. While 650-fill isn't the loftiest, it's reliable. The bag employs box baffle construction, helping to keep the down evenly distributed and prevent cold spots, which is expected at this price point. The YKK zippers are smooth and rarely snag, a small but significant detail often overlooked. The overall stitching and finish are clean, indicating good manufacturing quality. The recycled materials are a welcome bonus for environmentally conscious users, adding value without compromising performance.
Real-World Performance
In the field, the Questar 20° lives up to its temperature rating for most average sleepers. Its comfort range extends comfortably down to freezing, and pushing slightly below that is manageable with proper layering. The generous cut, particularly around the shoulders and hips, allows for tossing and turning without getting tangled or feeling constricted. This also means there's a bit more internal air space to heat, but the effective draft collar and zipper baffle do a good job of sealing in warmth. The Toe-asis foot warmer pocket is a small but appreciated feature, keeping cold feet from becoming a misery. The hydrophobic down performed as expected in damp conditions, maintaining loft better than untreated down, though it's still best to keep it dry.
Weight and Packability
Weight-wise, the Questar 20° sits squarely in the middle of the pack for its temperature rating and features. It's not an ultralight contender, but it's far from a burden. The packed size is decent but not exceptional. It compresses well into its included stuff sack, though it won't disappear into the bottom of a pack like some higher-fill power alternatives. For weekend trips or multi-day excursions where a few extra ounces aren't critical, it's perfectly manageable. The included compression sack helps, but those looking for minimal pack volume might want to invest in a smaller, higher-quality aftermarket sack to shave off a bit more space. It balances durability and cost effectively against absolute packed dimensions.
Durability and Longevity
The 20D recycled nylon fabric strikes a good balance between weight and tear resistance. It feels tough enough to handle typical campsite wear and tear, and we've seen these bags hold up over several seasons of consistent use. The YKK zippers are robust and show no signs of premature failure. The hydrophobic down, while not a magic bullet against water, certainly aids in maintaining loft and prolonging the bag's functional lifespan in varied conditions. With proper care and storage, which applies to any down bag, the Questar is built to last. This isn't a fragile piece of kit; it's designed for repeated use in the backcountry without constant worry about rips or snags.
Alternatives and Value
At its price point, the Questar 20° offers strong value, especially considering its comfort and feature set. Comparable alternatives might include the REI Co-op Magma 20 or the Marmot Trestles Elite Eco 20. The Magma 20 offers a higher fill power (850-fill) for a similar weight but often at a slightly higher cost and with a more athletic cut. The Trestles Elite Eco is a synthetic option, offering better wet-weather performance but with a noticeable weight and bulk penalty. The Questar carves out its niche by offering a highly comfortable, well-featured down bag for the price, making it an excellent all-around choice for backpackers who prioritize comfort and reliability without needing to chase the absolute lightest or most compact option on the market.
How we chose
We started with a long list of sleeping bags that people actually buy, cut anything that could not clear our baseline for durability and field performance, then ranked the 10 that were left against the same criteria. Rankings are editorial. No brand pays for placement, and affiliate links never move a pick up or down.
- Load carriage
- How the suspension handles the loads the pack is actually rated for, over long days.
- Real-world durability
- How the material, stitching, or steel holds up after a season of hard use — not how it looks new.
- Performance in bad conditions
- Wind, rain, cold, and grit are the test. Anything that only works on a nice day gets marked down.
- Weight and packability
- Every ounce has to earn its place in the pack, but not at the cost of something that fails in the field.
- Ease of use
- Setup, adjustment, and maintenance with cold hands, in the dark, without the manual.
- Value at its price point
- Compared against the closest competitors in the same tier, not against cheaper gear in a different class.
Questar 20° — frequently asked questions
- Is the Questar 20° worth it?
- We rank it #5 in Sleeping Bags. Recycled 650 down, generous cut, honest budget option for new backpackers.
- What is the Questar 20° best for?
- Best for three-season backpacking, comfort-first camping trips, first serious down bag purchase and backpackers who move in their sleep. Standouts: generous cut offers superior comfort for various sleeping positions and 650-fill nikwax hydrophobic down provides reliable warmth and moisture resistance.
- What are the downsides of the Questar 20°?
- Not the lightest or most compressible option available, 20D fabric, while durable, isn't ultra-lightweight and May feel too roomy for very cold sleepers who prefer less air volume to heat.
- What are the key specs of the Questar 20°?
- Temperature Rating: 20°F (-6°C) · Insulation Type: 650-fill Nikwax Hydrophobic Down · Shell Material: 20D Recycled Nylon Ripstop · Liner Material: 20D Recycled Nylon Taffeta · Features: SynergyLink Connectors, Toe-asis Foot Warmer
- Construction and Materials — what should I know about the Questar 20°?
- Therm-a-Rest uses a recycled 20D ripstop nylon for both the shell and liner, which feels robust without being overly stiff. The 650-fill Nikwax Hydrophobic Down is a smart choice, offering a balance of warmth, compressibility, and a crucial defense against moisture, which is often a downfall of untreated down.
- Real-World Performance — what should I know about the Questar 20°?
- In the field, the Questar 20° lives up to its temperature rating for most average sleepers. Its comfort range extends comfortably down to freezing, and pushing slightly below that is manageable with proper layering.
Compare side by side
Put the Questar 20° against any other pick on this list — specs, price, pros, cons and reader ratings.