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Spark Sp I

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

  • Shell: 10D UL Nylon treated with DWR
  • Liner: 15D nylon soft touch, high density weave
  • Down: ULTRA-DRYDown™ 850+ Loft 90% Down Cluster Premium Goose Down Click here to learn about Ultra-Dry Down.
  • Click here to learn about down quality and fill power.
  • Responsible Down Standard certified down Click here to learn about RDS Down
  • 1/3 length #3 YKK zipper
  • Sewn-through transverse baffle construction
  • 55/45 down fill ratio top/bottom
  • Anatomically tapered footbox
  • Compressed volume 1.55 L (Regular)
  • Includes lightweight Ultra-Sil® compression bag, mesh storage cell and laundry bag
You may also like (complete your sleep system) Ultralight Air Sleeping Mat // Ultralight SI Mat // Coolmax Adaptor Liner // Aeros Ultralight Pillow // eVent UltraSil Compression Dry Sack