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Big Agnes Star Fire UL Sleeping Bag: 0F Down


Star Fire UL Sleeping Bag

There's nothing like basking in the heat of the sun, but with the Star Fire you can almost replicate that feeling throughout the night. High-loft down traps your body's heat into a mummy-shaped cocoon of warmth to efficiently use all of your energy while you recharge. A collar and anti-snag tube eliminate drafts and heat loss along the neck and zipper, maximizing retention while keeping weight down. Further shedding ounces, Pertex Quantum material is extremely lightweight for the level of durability it brings the Star Fire, and it's made from recycled materials so you can sleep soundly knowing you made a sustainable choice.
  • Ultralight mummy bag for fast-and-light backpacking
  • Pertex Quantum is lightweight, durable, and eco-friendly
  • DownTek insulation has high loft for more efficient warmth
  • Insotect Flow baffles align insulation vertically
  • Anti-draft tube and collar seal out cold air
  • Stuff sack and storage sack included for convenience
  • Item #BAGZ28B

Responsible Collection
Pertex Quantum (100% recycled nylon ripstop)
850-fill DownTek
Max User Height
[regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[regular] 60in, [long] 62in
Hip Circumference
[regular] 54in, [long] 56in
Foot Circumference
[regular] 36in, [long] 38in
Draft Tube
3-D anti-snag
Fill Weight
[regular] 28oz, [long] 30oz
Storage Sack
Stuff Sack
8 x 17.5in
Stuff Size
7 x 8.5in
Claimed Weight
[regular] 2lb 7oz, [long] 2lb 10oz
Recommended Use
backpacking, weekend camping, winter camping
Manufacturer Warranty

Tech Specs

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Star Fire UL Series Sleeping Bags

These technical, ultralight bags are designed for adventures where every ounce counts, each nook and cranny in your pack is accounted for, and you depend on the performance of your sleeping bag like you would a harness, helmet, or beacon. The "Fly Creek of sleeping bags," our Star Fire UL series features the ultimate 850 fill power DownTek™ water-repellent down, and are built with a superlight, high-tear strength shell that also protects the inside footbox. Body-mapped baffle construction optimizes thermal efficiency creating the lightest, highly compressible bag for your most remote of overnight adventures.


The stuff sack is 2 times the stuff size? Is this correct?