Spark Sleeping Bag: 30F Down
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Quantity
Only 3 In stock
Why We Like The Sea To Summit Spark 30F Down Sleeping Bag
As the forest reawakens to springtime rains, and the sun shines just a bit warmer on our faces, we pack our Sea To Summit Spark 30F Down Sleeping Bag on our first fair-weather camping trips of the season. The powerful 850-fill down provides consistent warmth from the first warm nights of spring through the final trip of the fall, allowing us to sleep beneath the stars in comfort. The hydrophobic down and DWR treatment on the lightweight nylon ensure reliable warmth, even after spring showers and summer thunderstorms, and the bag packs down small so we can bring it on every trip.
Details
- Light and packable 3-season sleeping bag for comfortable nights
- Warm and lofty 850-fill down is treated with Ultra Dry to resist moisture
- Durable nylon shell is lightweight and packable for easy packing
- DWR treatment resists moisture in our tent to keep the down plush
- Mummy shape minimizes excess weight while keeping us warm
- Down-filled draft collar keeps cold air away from our core while we sleep
- Adjustable hood comfortably cradles our head to maximize warmth
- Compressible construction packs down small to save pack space
- Item #STSZ0AC
- Responsible Collection
- Responsibly Sourced
- Material
- 10D nylon, DWR treatment
- Insulation
- 850-fill Ultra Dry goose down (RDS-certified)
- Shape
- mummy
- Zipper
- half-length
- Max User Height
- [regular] 72.8in, [long] 78in
- Shoulder Circumference
- [regular] 61in, [long] 65in
- Hip Circumference
- [regular] 53.1in, [long] 57.1in
- Foot Circumference
- [regular] 40.2in, [long] 44.1in
- Bag Length
- regular, long
- Draft Tube
- down-filled
- Fill Weight
- [regular] 9.3oz, [long] 10.8oz
- Degree
- 30F
- European Norm/ISO Comfort Rating
- 39F
- European Norm/ISO Lower Limit Rating
- 30F
- Stuff Size
- [regular] 8L, [long] 8L
- Claimed Weight
- [regular] 1lb 1.4oz, [long] 1lb 2.9oz
- Activity
- hike & camp
- Manufacturer Warranty
- limited lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 42 ratings
Review Summary
Customer Images
Here's what customers have to say
The sleeping bag is widely praised for its excellent performance and quality. Customers highlight its lightweight and compact design, exceptional warmth and insulation, and comfortable, high-quality materials. Many users find the bag roomy and easy to move in, despite its mummy-style shape. Overall, the product receives very positive reviews, with many customers highly recommending it.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageJuly 7, 2025
Spark bag
[This review was collected as part of a promotion.] Do not like 3/4 zipper. Makes bag difficult to get in out. Do appreciate the lightness of the bag.
Originally reviewed on Sea to Summit
June 15, 2025
Spark down sleeping bag
[This review was collected as part of a promotion.] I plurchased this for a fast thru hike on the Superior Hiking Trail. Nights got down to 40 degrees. I-was a little worried about the chill and the bag rating since I'm a t-shirt underwear and sometimes socks guy. But this was perfect. Finally a bag true to its rating. Yes my tent was small and my pad reflects heat as well. but the bag was warm and comfortable and packs down sooo crazy tiny.
Originally reviewed on Sea to Summit
May 26, 2025
very good
[This review was collected as part of a promotion.] The sleeping bag is very comfortable and works great.
Originally reviewed on Sea to Summit
April 10, 2025
It is for my husband.
[This review was collected as part of a promotion.] It is for my husband. He loves it for his backpacking trip.
Originally reviewed on Sea to Summit
February 18, 2025
Best zero degree bag on the market
[This review was collected as part of a promotion.] I have just got mine and slept in it for five nights total. Comfortable and spacious and incredibly warm. 2Lbs 7Oz. is really good for a zero degree bag and keeps me going for four seasons.
Originally reviewed on Sea to Summit
January 13, 2025
Great Sleeping Bag
[This review was collected as part of a promotion.] Great design and functionality. Bag easily meets or exceeds the temperature rating.
Originally reviewed on Sea to Summit
December 14, 2024
Warranty exchange
[This review was collected as part of a promotion.] Had an issue with a sleeping bag after washing it cause if stuffing to move quite a lot
Originally reviewed on Sea to Summit
December 7, 2024
Failed gear and constantly getting frustrated
[This review was collected as part of a promotion.] 30% off after I buy it. And everything we have purchased has failed or ripped in two outings No more seatotrash for our family.
Originally reviewed on Sea to Summit
November 5, 2024
Almost perfect
[This review was collected as part of a promotion.] I really like the compressibility and weight of this bag. Just what I need for the fall and spring in my area. My only complaint is that the zipper is on the left, which I can't get used to. The door of my Alto TR1 is on the right (as well as most other single door tents) and so is the storage pocket. I am used to being able to unzip the bag a bit and access the door of my tent and the pocket for my phone ect. I can still get to these things but I would prefer the zipper on the right like all my other sleeping bags.
Originally reviewed on Sea to Summit
October 18, 2024
Excellent product
[This review was collected as part of a promotion.] This sleeping bag is well made and very functional. Zippers work well and are easy to use. And of course, it's very light, which is the primary reason I got it. I'd definitely buy again.
Originally reviewed on Sea to Summit
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