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Sea to Summit Ascent ACII

Ascent sleeping bag - ACII.

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The opinion of Aventure Nordique

Light, warm, comfortable and most importantly, adaptable. The Ascent is our sleeping bag of choice for most adventures, most of the time. Offering the perfect backpacking balance of comfort vs weight, our Ascent Series sleeping bags have more space than traditional mummy bags, yet still provide the thermal efficiency you need when exploring above the tree-line.The Free-Flow triple-zip design ensures your sleeping bag retains maximum warmth and efficiency when needed and multiple ventilation options when it’s not. The half zip on the right side of the bag provides freedom of movement for both arms, additional ventilation and means the top third of the bag can be folded down as a mini quilt. The full length, two-way left side zip and separate foot zip transforms the bag into a full quilt for when the mercury climbs higher than expected.If it’s warmth you’re after, close all the zips, pull the cord locks tight to drag everything in, and relax in luxurious comfort. The generous allocation of high quality 750+ Loft Ultra Dry Down ensures great insulation, while the oversized draft tubes prevents your body heat escaping. The panelled footbox and 3-dimensional hood make sure you’re not compressing the down when you’re trying to stay warm.Vertical baffles over the chest section ensure the down insulation cannot migrate or shift to the outside of the bag during sleep,creating cold spots. A side block baffle construction maintains the 60/40 fill ratio, keeping more down on the top of the bag for maximum insulation.


    • Tapered rectangular shape for perfect balance of space and adaptable warmth

    • Super-light 20D Nylon shell and lining fabrics for minimal packed size and maximum breathability

    • RDS 750+ Loft ULTRA-DRY Down for superior insulating power

    • 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 draft tube with anti-snag materials, prevents heat loss through zipper

    • 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 allows maximum down lofting, minimising heat loss from your feet

    • Large internal security pocket

    • Includes Ultra-Sil Compression Bag for compact storage

    • Zip Coupling: This bag is designed to pair with another

          Technical details

          Manufacturer Sea to Summit
          Product name Ascent ACII
          Article number DSLAC2
          Season 3 season
          Model Unisex
          Fill Duck Down
          Cuin Ultra-Dry Down 750+ Loft 90/10
          Comfort rating -3°C
          Comfort Limit -9°C
          Extreme rating -28°C
          Dimensions Regular : max user height < 183 cm - Long : max user height < 198 cm
          Shoulders - Hips - Feet: Regular : 155/146/122 cm - Long : 164,5/156/129 cm
          Folded size R : 6,2 L - L : 7,8 L
          Outer shell Nylon 20D
          Inner lining Nylon 20D
          Fill Weights Regular : 550 g - Long : 615 g
          Weight Regular : 1100 g - Long : 1195 g
          Colour Green
          Warranty 2 years
          Country of Manufacture China


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