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Sea to Summit

Sea to Summit Spark Ultralight Down Sleeping Bag

  • Based on 158 reviews
Condition: New
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$429.00 Why this price?

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Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, May 24
Order within 21 hours and 45 minutes
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Size: Long


Style: 28-degree


Features

  • 28-degree Fahrenheit (-2-degree Celsius) ultralight down sleeping bag for 2-season backpacking, bike packing, and touring; technical mummy shape features hood and zipper draft tubes
  • High-loft 850 fill power down insulation (Responsible Down Standard certified) treated with ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance
  • Ultralight, compressible 10D nylon shell with 7D liner fabric for minimal weight and bulk; one-third length, left-side YKK zipper
  • Contoured mummy shape provides adequate room for a natural sleeping position; baffle construction in the torso and sewn-through in the leg area
  • Long size bag has a max user height of six feet six inches; bag weighs 1.2 pounds; compresses to 3.5 liters with included Ultra-Sil compression sack

Brand: Sea to Summit


Occupancy: 1 Person


Shape: Mummy


Seasons: 3 Seasons


Temperature Rating: 28 degrees Fahrenheit


Age Range (Description): Adult


Sport: Backpacking


Material: Nylon


Fill Material: Down


Product Dimensions: 84"L x 31"W


Brand: ‎Sea to Summit


Occupancy: ‎1 Person


Shape: ‎Mummy


Seasons: ‎3 Seasons


Temperature Rating: ‎28 degrees Fahrenheit


Age Range (Description): ‎Adult


Sport: ‎Backpacking


Material: ‎Nylon


Fill Material: ‎Down


Product Dimensions: ‎84"L x 31"W


Closure Type: ‎Zipper


Item Weight: ‎0.5 Kilograms


Outer Material: ‎Nylon


Size: ‎Long


Item Package Dimensions L x W x H: ‎16.38 x 9.84 x 7.91 inches


Package Weight: ‎0.73 Kilograms


Item Dimensions LxWxH: ‎15.75 x 9.84 x 7.87 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: ‎S2122


Model Year: ‎2019


Style: ‎28-degree


Fill Material Type: ‎Down


Date First Available: February 27, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Light but nice
Size: Regular Style: 18-degree
I returned for the 8 degree one but it seems like a great quality
Reviewed in the United States on February 11, 2023 by Mike&Jenn
    • great sleeping bag for warmer temperatures
Size: Regular Style: 28-degree
This bag is well made and packs easily into a small sack. I often use it for sleeping at my workplace and the cube storage bag is perfect for my office locker! So far I have only used it a 70F and I am very comfortable sleeping with the zipper down. I like the look and feel of it. I generally only use sleeping bags down to about 20F above their rating and this feel like I would be comfortable down to about 50F zipped up. ... show more
Reviewed in the United States on November 21, 2022 by William M.
    • Cheap Zipper / Doesn't Breath
Size: Regular Style: 28-degree
This only gets a second star because it actually is really light. The rest is not worth the money. The zipper separates to easily and you have to fumble to fix it at night in the tent. The material is very strange. It doesn't really have any breathability. Even if your not too hot your body moisture seems to stay in the bag, so it feels like you are sleeping in a gargage bag. ... show more
Reviewed in the United States on October 17, 2022 by Customer
    • Nice, VERY light bag
Size: Regular Style: 50-degree
I like this bag because it’s super lightweight and warm. However, the stuff sack broke IMMEDIATELY, so now I’m not able to pack it down as small. Other than that, great product.
Reviewed in the United States on January 7, 2020 by Sam
    • Works well in caves
Size: Regular Style: 50-degree
I took this in to a cave to sleep in a 50° breezy passage. It worked well on the cold rock and resisted wind.
Reviewed in the United States on December 28, 2020 by Michael Seth
    • Exactly as advertised - a minimalized UL sleeping bag
Size: Long Style: 50-degree
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
    • Good concept but ultimately meh
Size: Regular Style: 50-degree
This sleeping bag is incredibly light and packs down well. It was well suited to camping in the smoky mountains over Labor Day. The lining of the sleeping bag is very thin, as a weight saving measure which made me concerned over potential longevity issues especially given the zipper snagged quite easily. ... show more
Reviewed in the United States on January 4, 2020 by mcmagic
    • Perfect for summer backpacking
Size: Long Style: 50-degree
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

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