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Sea to Summit

Sea to Summit Spark Ultralight Down Sleeping Bag

    • Based on 20 reviews
Condition: New
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$486.69 Why this price?
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Nov 24
Order within 1 hour and 19 minutes
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Size: Regular


Style: 0-degree


Features

  • Nylon
  • 0-degree Fahrenheit (-18-degree Celsius) ultralight down sleeping bag for 3-season backpacking, bike packing, and touring
  • High-loft 850+ fill power down insulation (Responsible Down Standard certified) with a non-PFC Ultra-Dry down treatment to improve reaction to moisture, retaining loft and performance
  • Ultralight 10D shell with PFC-free DWR keeps the hood and footbox highly water resistant; breathable 10D nylon liner provides all-night comfort
  • Contoured mummy shape provides adequate room for a natural sleeping position; YKK #5 zippers provide reliable, snag-free operation
  • Full box baffles for maximize warmth; Sea to Summit Guarantee is offered for the Lifetime of this product

Brand: Sea to Summit


Color: yellow


Occupancy: 1 Person


Shape: Mummy


Seasons: Winter


Temperature Rating: 0°F


Age Range (Description): Adult


Sport: Backpacking


Special Feature: Ultralight 10D shell with PFC-free DWR, Responsible Down Standard certified down insulation, and contoured mummy shape See more


Material: Nylon


Brand: ‎Sea to Summit


Color: ‎yellow


Occupancy: ‎1 Person


Shape: ‎Mummy


Seasons: ‎Winter


Temperature Rating: ‎0°F


Age Range (Description): ‎Adult


Sport: ‎Backpacking


Special Feature: ‎Ultralight 10D shell with PFC-free DWR, Responsible Down Standard certified down insulation, and contoured mummy shape


Material: ‎Nylon


Fill Material: ‎Down


Product Dimensions: ‎77.2"L x 30.5"W


Closure Type: ‎Zipper


Item Weight: ‎2.62 Pounds


Outer Material: ‎Nylon


Fabric Type: ‎Nylon


Size: ‎Regular


Maximum Height Recommendation: ‎6 Feet


Global Trade Identification Number: ‎33


Item Package Dimensions L x W x H: ‎18 x 15.5 x 12.25 inches


Package Weight: ‎1.34 Kilograms


Item Dimensions LxWxH: ‎77.2 x 30.5 x 3 inches


Brand Name: ‎Sea to Summit


Warranty Description: ‎Manufacturer guarantee against defects in materials or workmanship for the lifetime of the product


Suggested Users: ‎unisex-adult


Manufacturer: ‎Sea to Summit


Part Number: ‎47404


Style: ‎0-degree


Fill Material Type: ‎Down


Date First Available: January 26, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Excellent warmth to weight ratio
Size: Long Style: 0-degree
Review Image by R. Evano R. Evano
Review Image by R. Evano R. Evano
This bag comes folded in a large cube-shaped zippered bag, preserving its fluffiness. It includes a stuff sack that is the same size of a typical warm-weather thin bag. It’s not much bigger than my poly-fill camp blankets that are good to maybe 50°. Once unstuffed, this appears a bit wrinkly, but it fluffs out to an impressive thickness. It’s a good 4” thick when fluffed up, there’s a lot of air gap between me and the outside while in this bag. The side zipper is easy to operate with pulls on either side. Pulling both pulls at once makes for a clean zip. No catching on the sides. There is a flap inside the bag that overlaps the zipper. Lifting this provides a controlled bit of ventilation if the bag gets too warn. The hood is large and has a drawstring to constrict the opening. I am able to position this so the exposed part of my face is a few inches below the wind, it is a large hood. I got the XL length, being right at the edge of the sizes. I like the extra room at my feet, and it allows me to scoot down and bunch up the top a bit as a pillow. There’s a lot of coverage at the head, which I like. Extremely lightweight for the amount of warmth it provides. Fluffs out an impressive amount, stuffs small enough to fit in my 55L pack. The material is thin enough to see the fill thru the yellow parts. It feels like ultralight hammock fabric. Soft for a synthetic. No negatives to this bag, aside from being expensive; it’s a winning design and top quality. ... show more
Reviewed in the United States on November 3, 2024 by R. Evano R. Evano
    • Warm, light, all the little flourishes
Size: Long Style: 15-degree
I generally prefer quilts to bags, but as I contemplate some solo trips in colder climes, a mummy bag seemed like a smart option. Because I tend to sleep hot and given the weight/compressibility of the different temperature ratings, I got a 15 degree rated long bag (I am 6'5"), my 30 degree quilt has taken me lower than its rating comfortably. I can't say I was thrilled with the sole yellow color option but oh well. The bag comes in a storage cell, and already Sea to Summit (who I have other gear by, I love their Evac bags) has me impressed. I try to preserve my down item's loft, but that means my camping gear storage area is draped in quilts and puffy jackets all willy-nilly. I love that this comes with a storage option not just for the trail (more on that) but also for at home. The bag itself is as light as you could hope for, and comes with a very elaborate lab analysis of the down. I can confirm it comfortably fits a taller person, I would even say you could get more that 6'6" in there. The double zipper is a boon for warmer nights to partially open the bag, and I like the snaps to attach a quilt, even mine from another brand can clip in. The cinch for tightening around the head and face is easy to use from inside the bag, at least to close it, loosening is a bit tricky. And it is toasty, though I haven't gotten to find its lower limit just yet. Under my guideline of the harder a piece of gear is to get in its stuff sack, the better and moat likely ultralight it is, this is quality ultralight gear. I do like that two of the snaps have snap buckles so you can really get a decent opening. You can really crank it down to compress it, and it relofted quickly after. All in all, I am pleased and impressed, and even the yellow is starting to grow on me. ... show more
Reviewed in the United States on September 23, 2024 by J. Young
    • Perfect for summer backpacking
Great bag for summer trips. Super light and compact. Not as fragile as it looks.
Reviewed in the United States on October 14, 2019 by adam s helmig
    • Amazing sleeping bag!
Size: Regular Style: 30-degree
The Sea to Summit Spark Ultralight Down Sleeping Bag is basically a dream come true for backpackers. I grabbed the 30-degree version, and let me tell you, it’s like sleeping in a cloud. It comes with two bags: a mesh one for storage (so it doesn’t get all smushed) and a compression one for when you’re ready to hit the trail. I took it on a Sierra backpacking trip where temps were supposed to hover in the 30s, but surprise, it dipped to 27°F! The bag handled it like a champ—I was actually sweating inside. My favorite things? The featherlight weight, the cozy feel, and that nifty neck buckle that keeps everything snug. The one gripe? No foot zipper. I’m a hot sleeper, and a little foot ventilation would’ve been a lifesaver. Other than that, this thing’s a top-tier, high-quality gem! ... show more
Reviewed in the United States on October 8, 2024 by Iam dumb
    • to tight around the legs for by taste.
Size: Regular Style: 30-degree
The travel size was fine. Rolled up small enough to store on my motorcycle. But if was to confining for my sleep style.
Reviewed in the United States on July 6, 2024 by Alan
    • A Serious Sleeping Bag
Size: Regular Style: 15-degree
Wow, the Sea to Summit Spark Ultralight Down sleeping bag is no joke. You have no worry about freezing in this thing. Seriously. Not only is it super super light; when the box came, I assumed it was something else that was ordered. But when I opened it to find the great bag it comes in, it made sense. When you're out backpacking or camping, you want something light and doesn't take up much room. This thing checks both of those boxes. It's so soft, but don't let that fool you. This is a tough and super durable bag. It's been on 3 trips with us, and it doesn't disappoint. This won't be one that will tear easily or rip or have that zipper that just won't work right. This thing lives up to the hype of Sea to Summit. This is the kind of bag you see on those expedition shows and with good reason. The perfect gift for any outdoors person in your life or just to really treat yourself. It will easily last a lifetime, and if you get two, they will zip together for more comfort and possibly intimate moments. ... show more
Reviewed in the United States on September 17, 2024 by gooma2
    • Keeps you warm
Size: Long Style: 0-degree
This sleeping bag will keep you warm. Went camping in 30 degree weather and nearly sweated out of the bag.
Reviewed in the United States on October 22, 2024 by Creasman Family
    • Wow! This sleeping bag is really light!
Size: Long Style: 0-degree
Review Image by Mitzy Mitzy
Review Image by Mitzy Mitzy
Review Image by Mitzy Mitzy
The only thing about this sleeping bag I don't like is it is expensive. The sleeping bag is super light with down insulation inside it. The sleeping bag comes with a carry bag and a stuff sack. The carry bag is used for storing this sleeping bag uncompressed. The stuff sack is just to use it while backpacking to take up less space in your backpack. This bag is really light and really warm! I'm rating it a five out of five stars! Thank you! -Mike ... show more
Reviewed in the United States on September 26, 2024 by Mitzy Mitzy

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