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Sea to Summit

Spark SpIV Ultralight Sleeping Bag - (5°F) - Regular

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The Spark™ Ultralight Mummy 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 mummy sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user


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 Premium Goose Down certified Responsible Down Standard (RDS)
  • 10D shell and 7D liner materials help to achieve the incredible lightweight and compact packed size
  • Includes lightweight Ultra-Sil™ compression 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.
  • BEST USE: Ultralight Backpacking
  • COMES WITH: Ultra-Sil™ compression bag and storage cell
  • INSULATION: Ultra-Dry Down 850+ Loft
  • SHAPE: Mummy
  • SHELL FABRIC: Ultralight 10D Nylon Shell
  • ZIP OPTIONS: Left-side #3 YKK zipper

 

Size:

  Regular Long
Max user height: 6ft | 183cm 6ft 4in | 192cm
Shoulder: 58in | 146cm 60in | 152cm
Hip: 50in | 126cm 52in | 132cm
Foot: 35in | 88cm 38in | 94cm


Specifications :

  5°F Regular 5°F Long
BAG SERIES:
Spark 4
Spark 4
BAG WEIGHT:
1lb 15oz / 880g
2lbs 2.7oz / 985g
COMPRESSED VOLUME (ASTM STD):
6.6 L
7.7 L
COMPRESSION SACK:
S - 10L to 3.3L
S - 10L to 3.3L
FILL WEIGHT:
21.9 oz / 620g
24.7oz / 700g
FITS UP TO:
6 ft / 183 cm
6 ft 4 in / 192 cm
SEASON RATING:
3.5 Season
3.5 Season
TEMPERATURE (EN RATING):
5°F / -15°C (Lower Limit)
5°F / -15°C (Lower Limit)
WOMEN'S TEMP (EN RATING):
 18ºF (Comfort)  18ºF (Comfort)

Specifications

Gender
  • Men
  • Women
Age
  • Adult
Temperature Rating
  • 0°C and +
Eco-friendly
  • Responsible Down