Sea To Summit Spark Sp3 Regular Sleeping Bag

The sub-zero Spark. Perfect for winter missions where you were previously agonising about not taking a bag at all.The Spark is an ultra light bag with many possible uses.

The secrets of the Spark’s warmth to weight are in the premium quality down, the 1/2 length light-gauge #3 YKK zip and high performance micro-weight shell and liner fabrics.The Spark is designed as a close-fitting mummy bag.The full hood, foot box and short zip maximise fit and warmth while keeping weight and bulk to a minimum.The Spark I is constructed with sewn-through transverse baffle construction.

The Spark III is constructed entirely from box wall baffles including the foot-box for even heat retention. The head and neck baffles have been enlarged to trap vital warmth and achieve a lower limit EN rating of minus four degrees.


Contoured mummy; 10D nylon shell for minimal weight and bulk; box wall baffle construction throughout and draft tube for optimal warmth; 55/45 fill ratio; differential fill to gradually concentrate warmth over body core; contoured hood with draw-cord; tapered foot-box; 1/2 length YKK #3 side zip; includes lightweight Ultra-Sil® compression bag and a combined storage cell / laundry bag.


  • Down: ULTRA-DRY Down™ 850+ Loft 90/10 Premium Goose Down
  • Fill weight: 400g | 14.1oz
  • Bag weight: 625g | 22oz
  • Length / zip options: Left 1/2 length zip
  • Season ratings: Spring/Autumn/Winter
  • Suggested use: Travel; Adventure racing; Winter cycle touring; Liner bag; Ultra lightweight hiking; Ultra lightweight alpine climbing
  • Compressed volume*: 3.7 litres
  • Compression bag: XS - 6L to 2L


Barcode # 9327868095001
Brand Sea To Summit
Shipping Weight 0.5000kg
Shipping Width 0.050m
Shipping Height 0.050m
Shipping Length 0.050m
Unit Of Measure ea

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