Ascent ACII sleeping bag
  • Ascent ACII sleeping bag

Ascent ACII sleeping bag

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A rectangular Sea to Summit sleeping bag for more comfort, light and warm, but above all adaptable. The Ascent II™ sleeping bag is ideal to accompany you on most of your adventures. The Free-flow triple slider design allows for optimal heat retention when needed and multiple ventilation options when not.

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Be prepared for anything unexpected with our range of Ascent™ expandable sleeping bags! With a perfect weight/comfort ratio, sleeping bags from the Ascent™ range are more spacious than traditional mummy sleeping bags, while still providing the necessary thermal protection beyond the tree line. The zipper located on the right half of the bag offers great freedom of movement for the arms as well as better ventilation and allows the upper third of the sleeping bag to be converted into a mini quilt. The double-slider zipper along the entire left length of the bag and that at the feet allow the bag to be transformed into a quilt when the temperature is higher than expected. If, on the other hand, you want to be warm, simply close all the zippers and pull the drawstrings to tighten everything up and relax in complete comfort. Generous fill with high-quality 750+ Loft down provides excellent insulation, while oversized pads prevent your body heat from escaping.

Features of the Ascent ACII Sea To Summit down sleeping bag:

  • Temperatures: Standard EN13537
  • Comfort temperature: up to -4°C Temperature at which a woman can sleep comfortably.
  • Comfort limit temperature: -10° C Temperature at which a normal man can sleep comfortably for 8 hours
  • Extreme temperature: -30°C Temperature at which after 4 hours a normal woman will feel a sensation of cold which can lead to frostbite and/or hypothermia.
  • 20D Nylon Shell Construction
  • Double slider YKK 5 zip and independent foot zip
  • Wide hood and double adjustable drawstring
  • Interior pocket
  • Addition of Thermolite at the feet to reinforce the heat supply where it is most compressed.
  • Filling: ULTRA-DRY DOWNTM 750+ Loft, 90% premium duck down
  • Length and zip options: Regular left opening
  • Seasons: Spring / Autumn / Light winter
  • Use: Trekking, camping, ski touring
  • Weight of filling in regular: 550 g and 615 g long
  • Weight of the bag in regular: 1090 g and 1195 g long
  • Compressed volume in regular: 6.9 L and 7.2 L long.

Data sheet

Extreme temperature
1090 grammes

Specific References


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Ascent ACII sleeping bag

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