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Sea to Summit Ascent I - Regular

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Product description

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 provides 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 andadaptable warmth
  • Super-light 20D Nylon shell and lining fabrics for minimalpacked size and maximum breathability
  • RDS 750+ Loft ULTRA-DRY Down™ for superior insulatingpower
  • Vertical chest baffles prevent down migration and cold spots
  • Free-Flow half right side, full length two-way #5 YKK left sideand separate foot zips for freedom of movement, increasedventilation and dual-use as a quilt
  • Oversized draft tube with anti-snag materials, prevents heatloss through zipper
  • Oversized neck draft tube with a dual adjustment system foreven cinching and maximum warmth
  • Generously sized hood and dual cord adjustment for maximumwarmth retention
  • Anatomically shaped footbox allows maximum down lofting,minimising heat loss from your feet
  • Large internal security pocket with flat zipper
  • Includes Ultra-Sil™ Compression Bag for compact storage
  • Zip Coupling: This bag is designed to pair with another


  • Comfort temperature: 2
  • Lower temperature: -4
  • Extreme temperature: -21
  • Recommended user height: up to 183 cm
  • Packed dimensions: ø18 x 40 cm
  • Volume compressed: 4.9 L
  • Compression sack volume (compressed): 10 to 3.3 L
  • Weight (gram): 860
  • Fill weight (gram): 320
  • Internal chest circumference (cm): 155
  • Internal hip circumference (cm): 146
  • Internal foot circumference (cm): 122
  • Composition: Lightweight 20D Ripstop Nylon 400T with DWR, Lightweight 20D Nylon 384T with DWR, network emboss pattern, ULTRA-DRY Down™ 750+ Loft, 90/10 Premium Duck Down


Body size (max)183
Weight (gr)860
BrandSea To Summit
CategorySleeping bags
EAN Code9327868095117
Product code9327868095117

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