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Flame Ultralight Women's Sleeping Bag

Flame Ultralight Women's Sleeping Bag

Light and tiny + engineered to keep women warm+ View tech specs
  • Temp Rating
  • Size

BEST USE: Ultralight Backpacking

PERFORMANCE: Sleeping Bag Liner

WEIGHT: 7.6oz | 215g


Shipping & Returns

Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.

2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).

All orders are eligible for fast and easy returns within 60 days of purchase.

For more details, please check out our Help Center

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48°F || Flame Ultralight Women's Sleeping Bag
Flame Ultralight Women's Sleeping Bag
Description || Flame Ultralight Women's Sleeping Bag


The versatility of the Flame Ultralight Women's Sleeping Bag Series spans from an ultralight down-filled liner to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and design to provide cutting-edge performance.

The women's specific mummy fit is narrower at the shoulder and wider at the hip, and features extra down compared to the unisex Spark models.


Shaped for comfort

Narrower at the shoulders, wider between the hips and knees. Regardless of the position you sleep in (figure-four, on your side or on your stomach), this shape provides a significantly higher level of comfort by giving you the room to move without compressing the insulation.

Warmth from additional insulation

Additional insulation compared to unisex bags, positioned using different body mapping for thermal performance exactly where it is needed. Temperatures for Women’s sleeping bags are shown using the gender appropriate Comfort rating.

Maximum comfort for a good night's rest

Construction details like snug-fitting hoods and oversized draft tubes keep you warm in cooler weather. Super-soft fabrics are comfortable in any season.

You don’t have to narrow your options with a constrictive mummy bag – expand your horizons with a sleeping bag which fits the way you sleep.

Design Details


Non-PFC Treatment

Tech specs

  • Best Use
    Ultralight Backpacking, Bike packing, Bike Touring, Liner Bag
  • Comes With
    Ultra-Sil™ compression bag and storage cell
  • Insulation
    Ultra-Dry Down 850+ Loft
  • Shape
  • Shell Fabric
    Ultralight 10D Nylon Shell
  • Zip Options
    Right-side #3 YKK zipper
48°F Regular48°F Long35°F Regular35°F Long25°F Regular25°F Long15°F Regular15°F LongLiner RegularLiner Long

Frequently Asked questions

Is this sleeping bag warm enough for cool-weather camping or travel?

Yes, this sleeping bag is great for cool-weather camping, especially the Flame 15°F or 25°F sleeping bag models. The 15°F will get you to early winter temperatures when paired with an insulated sleeping pad (3.5 R-Value or higher).

Can this sleeping bag be used as a liner in another sleeping bag?

Yes. You could use the Flame 55°F or Flame 48°F sleeping bags inside another bag to boost the thermal performance for cold-weather use. Tip: add one of these to a 20°F sleeping bag instead of buying a 0°F sleeping bag for occasional winter use.

Can this sleeping bag be zipped to another sleeping bag?

No, this sleeping back does not join with another. Even though the 25°F and 15°F bags have full-length side zippers, they're not designed to be coupled.