Parsec 0

$529.95 - $619.95
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Whether on an overnight snowshoe, ski tour or just a quiet, off-season backpack, the Parsec 0F/-18C sleeping bag provides plenty of warmth for winter pursuits. Filled with highly compressible 800-fill Nikwax Hydrophobic Down™ that absorbs 90% less water and dries 3x faster than untreated down, the Parsec keeps you warm and dry in wet conditions.

The ultralight 20-denier GRS-certified 100% recycled nylon shell is a smart choice for saving weight and the planet, while the new anti-snag YKK® zipper prevents wear and tear with easy entries and exits. Improved—and optional—SynergyLink™ Connectors strap to your sleeping pad to keep your sleeping bag in place to boost comfort and overall warmth efficiency.

A refined shape shaves up to 2 oz off the previous version while adding a bit of girth in the shoulder to accommodate more clothing layers. Cold feet in the dead of winter? Not a chance; the down-lined Toe-asis™ foot pocket keeps your feet cozy all night long.


- Small: 2 lbs 2 oz
- Regular: 2 lbs 6 oz
- Long: 2 lbs 9 oz
Temperature Rating F:
0° F
Temperature Rating C:
-18° C
Insulation Type:
800 Fill Goose Nikwax Hydrophobic Down RDS
Fill Weight:
- Small: 1 lb 8 oz
- Regular: 1 lb 10 oz
- Long: 1 lb 13 oz
Shell Material:
100% Recycled Nylon Ripstop w/ DWR
Lining Material:
100% Recycled Nylon Ripstop
- Small: fits users up to 5 ft 6 in
- Regular: fits users up to 6 ft
- Long: fits users up to 6 ft 6 in
Stuff Size:
8 x 9 in
Circumference at Shoulders:
- Small: 58 in
- Regular: 63 in
- Long: 66 in
Circumference at Hips:
- Small: 57 in
- Regular: 58 in
- Long: 59 in
Circumference at Foot:
- Small: 44 in
- Regular: 46 in
- Long: 51 in
Other Features:
  • 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.
  • Responsible Down Standard Certified: Certification that ensures the waterfowl in the down supply chain are treated humanely.
  • SynergyLink™ Connectors: Ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system.
  • 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.
  • Quilt and Blanket Loops: Customize your sleep system by layering Therm-a-Rest 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.
  • Compression and storage sack included.

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