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Highlights
Best Use: Ultralight Backpacking
Performance: Warm Climate
Weight: 12.8oz | 363g
Compressed Volume: 2.4L
Lower Temp Rating: 45°F | 7°C
Performance
Weight:
- Ultralight
- Lightweight
- Midweight
Packability:
- Ultra Compact
- Compact
- Midsize
Climate:
- Warm
- Cold
- Extreme Cold
About The Product
If you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you.
Filled with RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 Denier liner fabric, while a 10D shell with a non-PFAS DWR plus a highly water repellent hood and footbox fabric shed wind and condensation.
The full-length zipper models can be zipped to an equivalent Women's Spark for comfort that couples can share
Product Features
Shipping & Returns
Free US Shipping on Orders $50+
Easy 60-Day Returns
For more details, please check out our Help Center.
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Sleeping Bag ISO Temperature Ratings Explained
Sea to Summit tests its sleeping bags for their temperature rating using the ISO 23537 test protocol. This test gives two key ratings: Lower Limit and Comfort Rating.
Lower Limit: The lowest temperature at which a man should stay warm.
Comfort Rating: The lowest temperature at which a woman should stay warm.
Sea to Summit Women’s-specific sleeping bags are listed using the Comfort Rating. Unisex bags are listed using the Lower Rating. For example, if the bag is rated at Lower Limit of 14°F | -10°C and Comfort rating of 27°F | -3°C, it should keep a woman warm down to 27°F | -3°C and a man warm down to 14°F | -10°C, if they are wearing warm clothes and using a good sleeping pad.
Remember: These ratings are just guidelines. Movement, weather, and your gear setup can all affect how warm you actually stay.
Pro Tip: Think of your sleeping bag, pad, and liner as a system. If you expect 28°F | -2°C weather, choose a sleeping bag rated for 23°F | -5°C, use a sleeping pad with an R-Value of 3 or more, and add a liner for extra warmth.
Spark Down Sleeping Bag 45°F / Regular
Spark Down Sleeping Bag 45°F / Regular
If you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you.
Filled with RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 Denier liner fabric, while a 10D shell with a non-PFAS DWR plus a highly water repellent hood and footbox fabric shed wind and condensation.
The full-length zipper models can be zipped to an equivalent Women's Spark for comfort that couples can share
Design Details
Technical Features
850+ Loft Ultra-Dry Down
850+ Loft Ultra-Dry Down
Quiltlock System
Quiltlock System
Responsible Down Standard (RDS)
Responsible Down Standard (RDS)
Non-PFAS
Non-PFAS
Tech specs
-
Best UseUltralight Backpacking
-
Comes With40D recycled, bluesign APPROVED nylon compression bag
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InsulationRDS certified, 850+ non-PFAS Ultra-Dry Down
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ShapeMummy
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Zip OptionsYKK #5 zippers with snag free zipper plow
| 45°F Regular | 45°F Long | 30°F Regular | 30°F Long | 15°F Regular | 15°F Long | 15°F Double | 0°F Regular | 0°F Long |
|---|
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