Sea To Summit Ascent ACII Down Sleeping Bag, Reg 1100g, Long 1195g

Model: Regular
Sale price$476.00



Be prepared for the unpredictable with Sea To Summit's Ascent™ Series bags. Light, warm, comfortable and most importantly, adaptable. Offering the perfect backpacking balance of comfort vs weight, the Ascent™ Series sleeping bags have more space than traditional mummy bags, yet still provides the thermal efficiency you need when exploring above the tree-line.

If it’s warmth you’re after, zip it up, pull the cord locks tight to drag everything in, and relax in luxurious comfort. The generous allocation of high quality 750+ Loft down ensures great insulation, while the oversized draft tubes prevents your body heat escaping. Temp ratings of -4°C comfort and -10°C lower limit (EN standards). 

The panelled footbox and 3-dimensional hood make sure you’re not compressing the down when you’re trying to stay warm.

Regular size suitable for users up to 183cm tall, weighs 1100g, and compresses down to 6.2L. 

Long version suitable for users up to 198cm, weighs 1195g, and compresses down to 7.8L 


  • Tapered rectangular shape for perfect balance of space and adaptable warmth
  • Responsible Down Standard 750+ Loft ULTRA-DRY Down™ for superior insulating power
  • Super-light 20D Nylon shell and lining fabrics for minimal packed size and maximum breathability
  • Vertical chest baffles prevent down migration and cold spots
  • Free-Flow half right side, full length two-way #5 YKK® left side and separate foot zips for freedom of movement, increased ventilation and dual-use as a quilt
  • Oversized zip draft tube with anti-snag materials prevents heat loss through the zip
  • Oversized neck draft tube with a dual adjustment system for even cinching and maximum warmth
  • Generously sized hood and dual cord adjustment for maximum warmth retention
  • Anatomically shaped footbox for maximum down lofting, so minimising heat loss from your feet
  • Large internal security pocket
  • Includes Ultra-Sil™ Compression Bag for compact storage


  • Recommended User Height: Reg up to 183 cm, Long up to 198cm
  • Packed Dimensions: Reg ø18 x 40cm, Long ø20 x 46cm
  • Volume Compressed: Reg 6.2L, Long 7.8L
  • Compression Sack Volume (Compressed): 10 to 3.3 L
  • Weight: Reg 1100 grams, Long 1195grams
  • Fill Weight: 550g (Regular), 615g (Long)
  • Shoulder width: 77.5cm (Regular), 82cm (Long)
  • Foot width: 61cm (Regular), 64.5cm (Long)
  • Shell and lining: 20D Nylon
  • Filling Material: ULTRA-DRY Down™ 750+ Loft Duck Down (min. 90% down)
  • Stuff sack: 100% Nylon

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