Sea To Summit Ascent AcII Down Sleeping Bag -10C Long

Product ID: 422297

Sea To Summit Ascent AcII Down Sleeping Bag -10C Long

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Shipped by: Knives Online

Light and compact + three-zipper system for ventilation

The Ascent down mummy sleeping bag redefines the meaning of versatile. Complex construction and high-quality down keep you warm when it's cold outside, while the triple-zipper Free-Flow Zip system ensures you stay cool and ventilated when the weather warms.

Shaped to allow a natural sleeping position for comfort, while light and compact enough to go anywhere.


  • ULTRA-DRY Down 750+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
  • Free-flow zipper system: full-length YKK® #5 main side zip, half-length opposite side zip, and foot zip provides unparalleled ventilation and use as a comforter
  • Vertical baffles over the chest to prevent down shifting as you roll over in your sleep
  • Shaped hood, oversized draft collar, and zipper draft tube keep the cold out and the warmth in
  • Internal pocket for phone / GPS / valuables
  • Includes lightweight Ultra-Sil compression bag and storage cell
  • Form a snug double sleeping bag by zipping to any Altitude, Journey or Venture sleeping bag
Tech Specs:
  • Design Type: Backpacking
  • Comes With: Ultra-Sil compression bag and storage cel
  • Insulation: Ultra-Dry Down 750+ Loft
  • Shape: Relaxed Mummy
  • Sheel Fabric: Lightweight 20D Nylon Shell
  • Zip Options: Free-Flow zipper system


  • Bag Weight: 1195g
  • Compressed Vol (ASTM Standard): 7.8 L
  • Compression Sack: M - 14L to 4.5L
  • Fill Weight: 615g
  • Fits Up To Height: 198 cm
  • Season Rating: 3 Season
  • Temperature Rating (EN Lower Limit): -10ºC