Sea to Summit Spark SpI 46ºF Ultra-Dry Down Sleeping Bag


Sea to Summit Spark SpI 46ºF Ultra-Dry Down Sleeping Bag

$319.00 $199.99

Using 850+ loft goose down treated with the amazing moisture repelling Ultra-Dry Down™, a micro-weight 10D shell and 15D lining, the Spark is one of the best warmth for weight minimalist sleeping bags available.

The Spark is an ultra light bag with several key uses. Its balance of size, weight and warmth make it an excellent summer sleeping bag, especially for cycle touring and ultra-light hiking. Its size and temperature rating means it can also work well as a booster bag, slipping inside another sleeping bag to add warmth. The protection of Ultra-Dry Down makes the Spark ideal for summer alpine use and adventure racing, where heavy weight is not tolerated and where - until now - down has not been a viable option.

  • Mummy-style long-length sleeping bag
  • Amazing warmth to weight ratio
  • 15D nylon soft touch, high density weave liner
  • 850+ loft Ultra-Dry Down (90/10 European goose down) fill
  • Ultra-Dry Down repels moisture, retains loft, and dries faster
  • Sew-through transverse baffle construction
  • Left-side, 1/3 length #3 YKK® zipper
  • Full hood for maximum warmth
  • Full foot box allows maximum down lofting, minimzing heat loss from feet
  • Can also be used as booster bag
  • Ultra-Sil compression bag, mesh storage cell, and laundry bag included
  • Compressed volume: 1.55 Liters
  • Compression bag: XXXS - 2.5 to 1 Liter
  • Fill weight: 7 oz. 
  • Footbox girth: 37"
  • EN Temperature Rating: 46ºF / 8ºC lower limit
  • Suggested use: Cycle touring, Ultra-light hiking, Adventure racing

EN Rating:

  • Comfort: 54ºF / 12ºC
  • Lower limit: 46ºF / 8ºC
  • Extreme: 23ºF / -5ºC
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Following a successful 1984 climb up the north face of Mount Everest, one of the summiteers, Tim Macartney-Snape decided to return six years later so that he could do what no one else had done - climb it starting from sea level, that is from "sea to summit".

For this trip, in 1990, Tim swam in India's Bay of Bengal and then set off on foot across the Gangetic plain toward the distant Himalayan foothills and four months later, set foot once again on the highest point on earth. Tim's solo ascent of Mt. Everest was named the "Sea to Summit" expedition.

Back in Australia, he joined forces with friend Roland Tyson to build a business that could make use of their knowledge of the outdoors to create truly ingenious, well-made but affordable outdoor equipment. They named their company Sea to Summit® after Tim's expedition and the business prospered. Today the Sea to Summit brand continues to provide innovative gear and serves a growing band of outdoor enthusiasts all over the world.
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Product Details

Sea to Summit Spark SpI 46ºF Ultra-Dry Down Sleeping Bag

SKU #:
UPC #:
Average weight:
13.8 oz. (390g.)
Ultra-Dry Down 850+ loft 90/10 European goose down
Comfort rating:
46ºF / 8ºC
Fits up to:
6' 7"
Hip girth:
15D Nylon
10D Pertex Quantum
Shoulder girth:
13.8 oz. (390g.) Ultra-Dry Down 850+ loft 90/10 European goose down 46ºF / 8ºC $319.00 $199.99