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Sea to Summit

Sea to Summit Spark Ultralight Down Sleeping Bag

  • Based on 35 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Sep 1
Order within 16 hours and 15 minutes
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Size: Double


Style: 15-degree


Features

  • Nylon
  • 15-degree Fahrenheit (-9-degree Celsius) ultralight down sleeping bag for 2-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


Occupancy: 2 Person


Shape: Mummy


Seasons: 7 Seasons


Temperature Rating: 15°F


Age Range (Description): Adult


Sport: Backpacking


Material: Nylon


Fill Material: Down


Product Dimensions: 83.1"L x 52.8"W


Brand: ‎Sea to Summit


Occupancy: ‎2 Person


Shape: ‎Mummy


Seasons: ‎7 Seasons


Temperature Rating: ‎15°F


Age Range (Description): ‎Adult


Sport: ‎Backpacking


Material: ‎Nylon


Fill Material: ‎Down


Product Dimensions: ‎83.1"L x 52.8"W


Closure Type: ‎Zipper


Item Weight: ‎3.63 Pounds


Outer Material: ‎Nylon


Fabric Type: ‎Nylon


Size: ‎Double


Maximum Height Recommendation: ‎198 Centimeters


Global Trade Identification Number: ‎26


Item Package Dimensions L x W x H: ‎20.87 x 17.24 x 14.25 inches


Package Weight: ‎1.85 Kilograms


Item Dimensions LxWxH: ‎83.1 x 52.8 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: ‎47403


Style: ‎15-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: Monday, Sep 1

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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Similar Products

Top Amazon Reviews

    • 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
    • good for travel
great product for travel.
Reviewed in the United States on October 6, 2019 by DCS
    • 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
    • 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
    • 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
    • Sea to Summit quality
Size: Regular Style: 0-degree
Great down sleeping bag, I saw it was Sea to Summit and had to get it, excellent warmth to weight/space ratio, tried it at home and feels very warm, I have yet to test it outside, the water is just starting to get cold so will give it a spin at the first opportunity. I like the color too.
Reviewed in the United States on December 1, 2024 by Edl
    • Exactly as advertised - a minimalized UL sleeping bag
Superlight and efficient at what it does. Mind the circumference measurement and make sure its big enough for you
Reviewed in the United States on January 23, 2020 by Danni R
    • Excellent bag and lightweight
Size: Regular Style: 0-degree
This is a great bag. It works well down to about 10 degrees F and does work down to 0 F. I have begun using this bag as my main bag in the jeep in case I'm stuck out in the backcountry in the winter. Its comfortable and lightweight
Reviewed in the United States on November 26, 2024 by Eric D. Brown

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