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Sea to Summit Sea to Summit Spark SpIII Down Sleeping Bag - Long 2022

The Spark SpIII - Long sleeping bag from Sea to Summit is suitable for 4 - season use, as well as for outdoor adventures in which weight and compact size are the priority. Superlightweight - only 745 grams, this sleeping bag features Ultra-Dry RDS 850+ Loft premium goose down, which makes the bag impressively thermoefficient and highly compressible.

Sea to Summit Spark SpIII Down Sleeping Bag - Long 2022
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Sea to Summit Spark SpIII Down Sleeping Bag - Long 2022

  1. Price: 459.70 with VAT
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and you will get this product on

Tuesday, 16 August, 2022

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  • We ship to all EU countries. Delivery time between 3 to 5 working days
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    0884 102 910
    0888 644 888

The Sea to Summit Spark Series bags is what you reach for when you need a high performance sleeping bag but don’t want to be weighed down by one.


Ultra-light and technical, the Sea to Summit Spark SPIII - Long down sleeping bag (for people up to 198 cm height) is designed to keep you as warm as possible while minimizing packed weight and size.

The secret to the impressive performance is a combination of premium materials and careful design. The RDS 850+ Loft premium goose down, light-gauge #3 YKK zip and high performance 10D Nylon shell and 7D lining fabrics, set the stage for superior performance. These materials are combined with a contoured mummy design for efficient insulation. The sizing provides extra room for sholders and hips without compromising thermal efficiency and a 1/2 zip aids access and ventilation. The down used in the Spark range is ULTRA-DRY Down - water-repellent treatment protects the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down. The Spark SpII model also features a zipper draft tube and draft hood collar to prevent heat loss.


The Spark SpIII mummy sleeping bag from Sea to Summit is an excellent choice for active hikers that go out from spring till mild winter, who want to have extra insulation for colder nights and for whom weight is the main focus.

  • Super lightweight down sleeping bag - long size
  • Contoured mummy shape for efficient insulation
  • Expedition mummy bag sizing provides extra space for layered clothing or extra wriggle room
  • Updated sizing provides extra room for both shoulders and hips while still maintaining insulation efficiency
  • Includes lightweight Ultra-Sil Nano compression bag for compact storage
  • Down: ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
  • Fill weight: 485 g
  • Season ratings: Spring-Summer-Fall-Mild Winter
  • Compressed volume: 5.4 litres
  • Packed dimensions: ø15 x 31 cm
  • Recommended User Height: up to 198 cm
  • Bag weight: 745 g
  • Temperature rating: -2°C Comfort / -8°C Lower limit / -26°C Extreme
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3months * 159.67 BGN per month
Increasement for the period in % - 4.2
GLP - 25.03%
GPR - 28.11%
Order amount - 235,00 €
Total credit amount - 244,90 €
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