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Spark Ultralight Sleeping Bag

Spark Ultralight Sleeping Bag

$269.00-$589.00
Engineered to keep you warm at the lightest weight and smallest compressed size+ View tech specs
  • Temp Rating
  • Size
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Highlights

BEST USE: Ultralight Backpacking

PERFORMANCE: Warm Weather

WEIGHT: 12oz | 340g

COMPRESSED VOLUME: 1.5 liters

LOWER TEMP RATING: 40ºF | 5ºC

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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40°F || Spark Ultralight Sleeping Bag
Spark Ultralight Sleeping Bag
$269.00-$589.00
Description || Spark Ultralight Sleeping Bag

Description

The Spark Ultralight Mummy Sleeping Bag Series spans everything from an ultralight down-filled liner, to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and no-frills design to provide cutting-edge performance.

Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate wiggle room for the performance-oriented, backcountry user.

Design Details

TECHNICAL FEATURES

850+ LOFT ULTRA-DRY DOWN
Non-PFC Treatment
RESPONSIBLE DOWN STANDARD (RDS)
UL 10 DENIER NYLON

Tech specs

  • Best Use
    Ultralight Backpacking
  • Comes With
    Ultra-Sil™ compression bag and storage cell
  • Insulation
    Ultra-Dry Down 850+ Loft
  • Shape
    Mummy
  • Shell Fabric
    Ultralight 10D Nylon Shell
  • Zip Options
    Left-side #3 YKK zipper
https://cdn.accentuate.io/7896095522844/1667336394843/spark-ultralight-sleeping-bag-regular.svg?v=1667336394843https://cdn.accentuate.io/7896095555612/1667336417221/spark-ultralight-sleeping-bag-long.svg?v=1667336417221https://cdn.accentuate.io/19509657796711/1667336364144/spark-ultralight-sleeping-bag-regular-III-IV.svg?v=1667336364144https://cdn.accentuate.io/19509658353767/1667336378125/spark-ultralight-sleeping-bag-long-III-IV.svg?v=1667336378126
40°F Regular40°F Long28°F Regular28°F Long18°F Regular18°F Long5°F Regular5°F LongLiner RegularLiner Long

Frequently Asked questions

Is this sleeping bag warm enough for cooler temperatures?

This sleeping bag is great for cool-weather camping and travel, especially the 5°F or 18°F models for late fall temps. For colder winter conditions, try pairing our Spark 5°F with a 3.5 R-Value sleeping pad or higher, like the Comfort Light Insulated.

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

Yes. You could use the Spark 50°F, or even the Spark 40°F to boost the performance of a bag for cold-weather use. Adding one of these to a 20°F bag might make more sense than buying a 0°F 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 18°F or 5°F have full-length side zippers, they're not designed to be coupled.

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