The Spark I is the lightest and most compact sleeping bag we make. It's an excellent summer bag whether you're ultra-light through hiking or cycle touring. It also works well as a booster bag, slipping inside another sleepin...

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The Spark I is the lightest and most compact sleeping bag we make. It's an excellent summer bag whether you're ultra-light through hiking or cycle touring. It also works well as a booster bag, slipping inside another sleeping bag to add warmth. .

  • Shell: 10D UL Nylon treated with DWR
  • Liner: 15D nylon soft touch, high density weave
  • 850+ loft Ultra-Dry Down (90/10 European goose down)850+ loft Ultra-Dry Down (90/10 European goose down)
  • 1/3 length #3 YKK zipperf
  • Sew-through transverse baffle construction
  • Shell: 10D UL Nylon treated with DWR
  • Liner: 15D nylon soft touch, high density weave
  • 850+ loft Ultra-Dry Down (90/10 European goose down)850+ loft Ultra-Dry Down (90/10 European goose down)
  • 1/3 length #3 YKK zipperf
  • Sew-through transverse baffle construction

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