Sea To Summit Spark Sp1 Regular Sleeping Bag 


Using the warmth of 850+ loft 90/10 Premium goose down, the amazing moisture protection of ULTRADRY Down™, and a micro-weight 10D Nylon shell and 15D lining, we have created one of the best warmth-for-weight minimalist sleeping bags available.

The Spark is an ultra-light bag with many possible uses. Its balance of size, weight and warmth make it an excellent summer sleeping bag, especially for weight and space conscious cycle tourers and ultralight fastpackers. It also works well as a liner bag, slipping inside another sleeping bag to add one or two seasons to its rating.

The Spark compresses so small, we had to reengineer our compression-sacks to make one that reduced sufficiently. The ULTRA-DRY Down™ protection makes the Spark an impressive hard-alpine or adventure racing sleeping bag, where down has never before been a viable option, and weight is simply not tolerated. The secrets of the Spark’s warmth-to-weight are in the premium quality down, the half length light-gauge #3 YKK® zip and high performance microweight shell and liner fabrics. The Spark is designed as a close-fitting mummy bag. The full hood, footbox and short zip maximise fit and warmth while keeping weight and bulk to a minimum.


  • 9°C comfort rating, 5°C lower limit
  • Ultralight 7D and 10D fabrics for minimal weight and packed size
  • Contoured mummy design for efficient insulation
  • Sewn-through quilted construction to keep down in position
  • RDS certified 850+ Loft premium goose down
  • ULTRA-DRY down water-repellent treatment protects from moisture
  • Light gauge #3 YKK zip
  • Doubles as a liner
  • Integrated stuff sack



  • Comfort Temp. Rating: 9 °C
  • Lower Temp. Limit: 5 °C
  • Max. User Height: 183 cm
  • Internal Girth: 150 cm Chest | 130 cm Hip | 88 cm Foot
  • External Dimensions: 189L x 70W cm
  • Packed Dimensions: 28L x 11.5 cm
  • Fill Weight: 180 g
  • Weight: 0.340 Kg
  • Warranty: Limited Lifetime


Barcode # 9327868040353
Brand Sea To Summit
Shipping Weight 0.5000kg
Shipping Width 0.050m
Shipping Height 0.050m
Shipping Length 0.050m
Shipping Cubic 0.000125000m3
Unit Of Measure ea

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