Therm-A-Rest Parsec 20 Down Sleeping Bag
DESIGNED FOR COMFORT AND LIGHTWEIGHT PACKABILITY, THE AWARD-WINNING PARSEC 20F/-6C SLEEPING BAG IS THE PERFECT CHOICE FOR SPRING THROUGH WINTER.
Filled with 800-fill Nikwax Hydrophobic Down™ that absorbs 90% less water and dries three times faster than untreated down, the Parsec sleeping bag delivers outstanding performance in wet conditions. Updated in 2022, it boasts an ultralight, eco-friendly 20-denier GRS-certified recycled nylon shell that balances durability with weight-saving design. The new no-snag YKK® zipper makes getting in and out effortless while preventing annoying tears.
The Parsec also features improved SynergyLink™ Connectors that secure around your sleeping pad, allowing for greater freedom of movement without slipping off and losing warmth. The refined shape boosts efficiency, shedding 2 oz (57 g) from the previous version, and the down-lined Toe-asis™ foot pocket ensures your feet stay warm and snug all night.
Whether it's your first sleeping bag or you're upgrading your kit, the Parsec is designed to be your ultimate companion for outdoor adventures—light, warm, and ready for anything.
Explore our full range of Down Sleeping Bags here.
FEATURES OF THE THERM-A-REST PARSEC 20 DOWN SLEEPING BAG
- Recycled Shell & Liner: GRS-certified 100% recycled fabrics are eco-friendly while being lightweight, soft and durable.
- 800-Fill Nikwax Hydrophobic Down™: PFC-free and absorbs 90% less water and dries 3x faster than untreated down.
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Responsible Down Standard Certified: Certification that ensures the waterfowl in the down supply chain are treated humanely.
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SynergyLink™ Connectors: Ultralight straps create a secure bag-to-sleeping pad connection that optimises the comfort and thermal efficiency of your entire sleep system. SynergyLink Connectors function best with regular sized sleeping pads that are 3 inches thick or less when inflated.
- Heat-Mapped Zoned Insulation: Delivers an elite warmth-to-weight ratio by allocating insulation to where you need it and reducing it where you don’t.
- YKK® Anti-Snag Zipper: Prevents accidental tears and eases entries and exits.
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Quilt and Blanket Loops: Customise your sleep system by layering our quilts or tech blankets for increased warmth.
- Additional Features: Toe-asis™ Foot Warmer Pocket, heat-trapping draft collars, full-length zipper draft tubes, differential cut, snag-free zipper, cinchable hood and external zip pocket.
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Size + Specifications
Comfort: 0C
Limit: -6C
Extreme: -23C
800 Fill Goose Nikwax Hydrophobic Down RDS
Shell - 100% Recycled Nylon Ripstop w/DWR
Lining - 100% Recycled Nylon Ripstop
Regular
-Weight: 810g
-Width: 78cm
-Length: 203cm
-Fits: 183cm
-Girth: Shoulder - 157cm
Hip - 145cm
Foot Box - 117cm
-Packed Dimensions: 18cm x 21cm
Zip side - Left
Long
-Weight: 890g
-Width: 82cm
-Length: 216cm
-Fits: 198cm
-Girth, Shoulder: 165cm
Hip: 147cm
Foot Box - 130cm
Packed Dimensions - 18cm x 21cm
Zip side - Left -
reviews
"Just topped off 5 days in the High Sierra. Most comfy, compact and colourful bag I’ve ever owned. Highly recommend!"
"Bought for shoulder season mountaineering and alpine climbing, I love the straps as I would often start to slide off of my pad with my previous bag."
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what we think
The Therm-A-Rest Parsec 20 sleeping bag has been a fantastic addition to our gear at Valley and Peak. We tested it out in the Cairngorms in December, where temperatures dipped just below freezing, and it performed exceptionally well. The 800-fill Nikwax Hydrophobic Down™ kept us warm and dry even in damp conditions, offering great insulation without weighing us down.
The bag is impressively light, which is always a bonus for our outdoor adventures, especially when we're looking to keep our pack weight down. However, it’s worth noting that the sizing tends to run a bit small, so if you're on the fence about which size to choose, we’d recommend going up a size for extra comfort and room to move.
The 2022 updates to the Parsec really shine through—its eco-friendly, lightweight shell and new features like the no-snag YKK® zip make it easy to use and durable. The SynergyLink™ Connectors are a brilliant touch, keeping us on our pad throughout the night and preventing any heat loss. Despite the smaller sizing, the Parsec 20 is a top-performing bag that we’ll definitely be reaching for on future wild camping trips. -
Weight
810 g
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Fill Power
800
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Season Rating
3-Season
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Comfort Limit
-6°C
"The Valley and Peak promise is built on three pillars: thoughtfully curated gear, exceptional customer service, and a genuine love for the outdoors. As an independent, family-run business, we carefully select products from a wide variety of cottage gear brands and trusted names, ensuring that each item is rigorously tested and loved by our team. Our customer service is a cornerstone of our brand, offering personalised support to help you choose and care for your gear with confidence"
Jim De'Ath, Managing Director