Bergfreunde expert Max
Bergfreunde expert Max
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Sea to Summit - Ascent AcII - Down sleeping bag

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At a glance

% recommend
100% recommend
Full-length zip
Customers say: Spacious
Customers say: Durable
Hydrophobic down
Three seasons
°C comfort rating
-3°C comfort rating
Shop consciously!
1100 g
Material information & features
Suitable for:
Recommended use:
expedition, camping
Main material:
100% polyamide
100% down
Material type:
down insulation
Material note:
contains non-textile parts of animal origin
Fabric treatment:
hydrophobic down
Fabric properties:
60/40 (down to feather)
Shop consciously:
contains RDS certified down
side zip, drawstring
Comfort rating:
-3 °C
Lower limit rating:
-9 °C
Extreme rating:
-28 °C
three seasons
Dimensions (interior):
max. height Regular/Long: 183/192 cm
1,100 g
Reference size:
Regular size
Item No.:
Product description

The Ascent™ Series is the most versatile down sleeping bag collection from Sea to Summit. The Ascent AcII is a real all-rounder filled with 750-fill power down for undertakings in more extreme conditions. For compact transport, the sleeping bag comes with a compression bag. The unique design of the Ascent™ series sleeping bag offers more space than traditional mummy sleeping bags, but still provides excellent thermal efficiency, so you can use it whilst adventuring above the treeline. This is due in part to the Free-Flow triple-zip System, which also gives you a variable ventilation option. The half-length zip on the right and the full-length zip on the left allow you to stretch out your arms and give you the option of folding the upper portion of the bag over like a blanket. If it gets warmer outside, you can use the two-way full-length zip and the additional zip at the foot box to convert the bag into a quilt.

If you get too cold, zip up the bag, cinch the drawcords and snuggle up in the large hood, which has a dual cord adjustment for ultimate comfort. The use of high-quality 750+ loft down guarantees high levels of insulation, whilst the oversized draught tube, complete with anti-snag materials, prevents heat loss through the zip.

Lastly, the Ascent AcI comes equipped with the Zip Coupling system, which allows you to pair this bag with other compatible sleeping bag models quickly and easily.

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This is what other customers say:
Shaun's profile picture
Question from Shaun
Does this sleeping bag use goose or duck down?
's profile picture

Oops! You forgot about your answer

Adrian (Community)'s profile picture
Adrian (Community) | Customer Service
14.09.2022 12, 20

Hi Shaun, This bag uses ULTRA-DRY Down 750+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)

This is what customers from around the world say:
Axel's profile picture

66% have found the reviews
by Axel helpful

  • Advantages
    Water repellent
    Easily compressed
Robert's profile picture

Product images by Robert
  • Advantages
    Adjustable hood
    Draft collar
    Price / performance
    Full length zip
    Water repellent
    Easily compressed
Franz-Rudolf's profile picture

  • Advantages
    Full length zip
Dama's profile picture

  • Advantages
    Full length zip
    Draft collar

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