Sea to Summit Spark SPII Down Sleeping Bag, 490g



Sea to Summit's new ultralight Spark SPII sleeping bag is designed to keep you as warm as possible while minimising packed weight and size. Great for adventure when you need a high performance sleeping bag but don’t want to be weighed down by one, Sea to Summit’s Spark Series Bags are what you reach for.

The Spark II's temperature rating is 4°C Comfort, -2°C Lower limit (-18°C Extreme). Weighs just 490g and packs down to 25cm x 13cm diameter.

The Spark SPII combines ULTRA-DRY Down™ 850+ loft premium goose down, light-gauge #3 YKK® zip, high-performance 10D nylon shell and 7D lining fabrics and a contoured mummy shape for efficient insulation and superior performance.

Other features include a hybrid construction with box wall baffles over the torso for core warmth and a sewn through construction at the legs to shave weight, a half-length zip and a draft tube and a full hood to keep in your warmth. A 3-season adventure bag.


  • Contoured mummy design for efficient insulation, with updated sizing that provides extra room for shoulders and hips
  • RDS 850+ Loft ULTRA-DRY Down for superior insulating power, moisture resistance and compressibility (Responsible Down Standard certified)
  • 10D Nylon shell and 7D lining fabrics
  • Vertical chest baffles prevent down migration and cold spots
  • Horizontal sewn-through baffles in the lower half of the bag minimise weight
  • Half zip with two sliders to aid access and allow ventilation from bag's mid-section
  • Draft tube and draft collar prevents heat loss through the zipper and hood
  • Includes storage cell and lightweight Ultra-Sil compression bag for compact storage.

NOTE: This bag is not designed to pair with another.



  • Colour: Dark Grey / Yellow
  • Weight: 490g (fill weight 300g)
  • Circumference Dimensions: chest 150cm x hip 130cm x foot 88cm
  • User Height: up to 183cm
  • Compression Sack Size: 2XS
  • Length: Regular
  • Shape: Mummy
  • Insulation Type: RDS 850+ Loft ULTRA-DRY
  • Temperature Ratings: 4°C Comfort, -2°C Lower limit, -18°C Extreme
  • Zipper Position : Left


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