Sea to Summit Spark SP III 25°F/-4°C Long LZ Sleeping Bag

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Item #: 331774604

The Spark III is the warmest in the Sea to Summit Spark sleeping bag series and is one of the best warmth-for-weight sleeping bags available. The Spark III will serve you well for spring, summer and mild winter adventures.


  • 850+ loft Ultra-Dry Down® (90/10 European goose down)
  • 1/3 length #3 YKK zipper
  • Shell: 10D UL Nylon treated with DWR
  • Liner: 15D nylon soft touch, high density weave
  • Box-wall baffle construction throughout
  • Suggested use: Cycle touring, ultra-light hiking, adventure racing
  • Includes lightweight Ultra-Sil® compression bag, mesh storage cell and laundry bag
  • Left Hand Zip


  • Weight: 1 lb 8 oz (690 g)
  • Temperature: 25° F (-4°C)
  • EN Rating – Comfort: 35° F (2°C)
  • EN Rating – Lower Limit: 25° F (-4°C)
  • Fill Weight: 15 oz (435 g)
  • Shoulder Girth: 60" (152 cm)
  • Hip Girth: 52" (132 cm)
  • Foot Girth: 38" (94 cm)
  • Vendor Style Number: 063LL


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