The Spark Ultralight Sleeping Bag Series spans everything from an ultralight down-filled liner to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and no-frills design to provide cutting-edge performance for the designed end-use.

Ultralight does not mean ultra-tight: The Spark sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.

IS THIS DOWN SLEEPING BAG…?

• Suitable for cooler temperatures?Yes. You would want the Spark5°For possibly the18°F– either bag will work in late Fall, the5°Fwill take you down to winter temperatures when paired with an adequately insulating sleeping mat like the

  HIGHLIGHTS

  Best Use

  • Ultralight Backpacking, Bike Touring, Liner Bag

  Performance

  • Summer or Sleeping Bag Liner:50°F (comfort range 50°F to 70°F)
  • Warm weather:40°F (comfort range 40° to 60°F)
  • 2 Season:28°F (comfort range 28°F to 60°F)
  • 2.5 Season:18°F (comfort range 18°F to 55°F)
  • 3.5 Season:5°F (comfort range 5°F to 50°F)

  FEATURES

  • ULTRA-DRY Down 850+Loft 90% Down Cluster PremiumGoose Down certifiedResponsible Down Standard(RDS)
  • 10D shell and 7D liner materialshelp to achieve the incredible lightweight and compact packed size
  • Includeslightweight Ultra-Silcompression bag and storage cell

  • Zipper-length trimmed for gram-saving performance
  • 50°F, 40°F, and 28°F have 1/3-length zippers
  • 18°F and 5°F have full-length side zippers
  • Baffle construction
  • 50°F and 40°F have sewn-through construction.
  • 28°F has baffles in the torso and sewn through in the leg area.
  • 18°F and 5°F are fully baffled.
  SPARK ULTRALIGHT SLEEPING BAG