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Sea to Summit Spark Down Long 0°F Sleeping Bag

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About This Item

Temp Rating

-5 to 10 Degrees

Insulation Type

Down

If you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you.Filled with RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 denier liner fabric, while a 10D shell with a non-PFAS DWR plus a highly water repellent hood and footbox fabric shed wind and condensation.The full-length zipper model can be zipped to an equivalent Women's Spark for comfort that couples can share.

DESIGN & DETAILS:

  • Increased breathability in shell and liner fabrics with added water-resistance in the hood and footbox: the 2024 Spark brings more comfort to the realm of ultralight sleeping bags
  • RDS-certified, 850+ fillpower goose down with a non-PFAS Ultra-Dry Down treatment for maximum thermal performance
  • Ultralight, breathable 10D nylon liner and a 10D shell with non-PFAS DWR keeps the hood and footbox highly water resistant
  • Technical hood, anatomical footbox and an ergonomic mummy shape-ultralight doesn't have to mean ultralight
  • YKK #5 zippers with zipper plough provide reliable, snag-free operation
  • Baffle construction specific for each use: Sewn through for lighter weight (7°C|45°F), Hybrid box baffles in torso/sewn through in leg area (-1°C|30°F) or full box baffles for maximum warmth (-9°C|15°F)
  • Sea to Summit Guarantee is offered for the Lifetime of this product
  • Brand : Sea to Summit
  • Country of Origin : Imported
  • Web ID: 24S2SUSPRKDWNSLPNCSLC
  • SKU: 26092935

REVIEWS

4.8

57 Reviews

Images

Finally A Cold-weather Bag That Fits A Big Guy (And A Side Sleeper)

[This review was collected as part of a promotion.] I’m 6'4", about 240 lbs—built more like an aging NFL linebacker than a thru-hiker—and this bag actually fits. Plenty of room to move without cold spots, which matters if you’re a side sleeper like me. It’s warm, comfortable, and feels thoughtfully designed rather than scaled up as an afterthought. Build quality is excellent across the board, and both the storage bag and compression sack are noticeably higher quality than what usually gets tossed in. If you’re bigger, move around in your sleep, and still want real 0-degree performance, this bag delivers.

Best Sleeping Bag.

[This review was collected as part of a promotion.] I tried this sleeping bag all the way down to 5°F with layered clothing, and it did fantastic. Super comfortable. I highly recommend.

Excellent Quality, Warm And Comfortable1

[This review was collected as part of a promotion.] I've used the Sea to Summit Spark 30 on a few trial runs and am impressed with the quality of the bag, compression sack and storage bag! The sleeping bag has been warm and comfortable and packs well. I'm an avid hiker/thru hiker and this bag is a great addition to my gear closet!!!

Great Bag, Too Small .

[This review was collected as part of a promotion.] Great bag, too small . Insulation fantastic and so light!

Perfect Bag!

[This review was collected as part of a promotion.] Packs down super well, love that I can unzip the bottom and walk around LOL. Big fan!

Read All Reviews (57)