Spark SpII - Long - Left Zip Grey/Yellow
Spark SpII - Long - Left Zip Grey/Yellow

Spark SpII - Long - Left Zip Grey/Yellow

RRP £380.00 Now £266.00
Product Details

Designed for lightweight performance, the Sea to Summit Spark SpII down filled sleeping bag is perfect for use all year round, whether you're trekking across continents or tackling some routes closer to home. The 850+ Loft premium goose down and specially designed baffle construction locks in heat and keeps you warm all night long without added bulk. The 1/2 zip with two sliders helps with access and allows ventilation from the mid-section of the bag should you get too warm. The mummy shape locks in heat to increase thermal efficiency for a better nights sleep during the colder months.

  • Ultralight 7D and 10D fabrics for minimal weight and packed size
  • RDS 850+ Loft Premium Goose ULTRA-DRY Down™ for maximum insulation value
  • Contoured mummy shape for comfort and efficient insulation
  • Vertical chest baffles prevent down migration and cold spots
  • NOTE: This bag is not designed to pair with another Vertical box baffles in the torso area accommodates extra down and boosts warmth around the core, vertical baffles on chest optimises position of down to prevent it moving during use
  • Lower part of the bag uses a sewn through horizontal baffle construction to minimise weight
  • ½ zip with two sliders aids access and allows ventilation from mid-section of bag
  • Updated sizing provides extra room for both shoulders and hips while still maintaining insulation efficiency
  • Draft tube prevents heat loss through the zipper
  • Includes hood draft collar
  • Temperature rated 4°C - -18°C 
Delivery & Returns

UK Standard Delivery

  • UK Standard Delivery is Free for orders over £30
  • UK Standard Delivery is £1.99 for orders under £30

UK Next Day Delivery

  • The cost of Next Day Delivery is £4.99
  • If you order by 2pm, you will receive your order the next working day
  • If you order anytime at the weekend, you will receive your goods on the following Tuesday.
  • Next Day Delivery is not available to the following: Ireland and the Scottish Highlands

UK Returns

  • Free UK returns within 30 days of purchase

Stock Alert

Please alert me via email when this product is back in stock.

Size Guide



Chest 36” 38” 40” 43” 46” 49” 52”
Waist 28” 30” 32” 34” 36” 38” 40”

Chest sizing varies widely depending on the garment, brand or range. Instead we have outlined below a few of the main types of fit found in our ranges and how they compare.


Waist 28” 30” 32” 34” 36” 38”
Leg Length Short Regular Long
  30” 32” 34”