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Spark Sleeping Bag: 15F Down
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Ultralight cold-night confidence with Spark Sleeping Bag: 15F Down
What Our Gearhead® Experts Are Saying:
"Warmth-to-weight is stellar. It compresses to a true ‘small’ and still handles frosty starts."
We chase shoulder-season summits with the Spark 15F Down. High-loft fill, efficient baffles, and a streamlined cut deliver serious warmth without taxing pack space.Draft controls fine-tune comfort when temps hover well below freezing—ideal for fast, cold itineraries.
Details
- Ultralight sleeping bag for alpine missions and cold-weather backpacking
- 15-degree rating ideal for early spring and late fall expeditions
- Premium 850+ fill down offers high warmth-to-weight ratio
- Ultralight 10D shell fabric minimizes packed weight and size
- Tapered mummy shape reduces dead space and boosts thermal efficiency
- Draft collar and zipper guard keep warmth inside and cold out
- Full-length zipper allows ventilation when conditions warm up
- Compresses extremely small for efficient pack storage
- Item #STSZ0AA
- Responsible Collection
- Responsibly Sourced
- Material
- 10D nylon, DWR treatment
- Insulation
- 850-fill Ultra Dry Down (RDS-certified)
- Shape
- mummy
- Max User Height
- [regular] 72.8in, [long] 78in, [double] 78in
- Shoulder Circumference
- [regular] 61in, [long] 65in, [double] 105.5in
- Hip Circumference
- [regular] 53.1in, [long] 57.1in, [double] 96.9in
- Foot Circumference
- [regular] 40.2in, [long] 44.1in, [double] 82.3in
- Bag Length
- regular, long, double
- Draft Tube
- full-length
- Fill Weight
- [regular] 1lb 0.9oz, [long] 1lb 3oz, [double] 2lb 2.7oz
- Degree
- 15F
- European Norm/ISO Comfort Rating
- 29F
- European Norm/ISO Lower Limit Rating
- 18F
- Stuff Sack
- included
- Stuff Size
- [regular] 13L, [long] 13L, [double] 20L
- Claimed Weight
- [regular] 1lb 9.75oz, [long] 1lb 11.7oz, [double] 3lb 6.4oz
- Activity
- hiking, camping, backpacking
- Manufacturer Warranty
- limited lifetime
Your Ally In Every Adventure
Since 1991, Sea to Summit has been there for every adventure. Designed to be the perfect balance of clever, packable, and light, Sea to Summit products encourage self-reliance anywhere.
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