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Sea to Summit Altitude AtI 2019

Sea to Summit Altitude AtI 2019

Offering the perfect backpacking balance of comfort vs weight, our Altitude™ 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 left side of the bag...Read More


  • Women’s specific tapered rectangular shape for perfect balance of space and adaptable warmth
  • Extra down overall and THERMOLITE® panels under the foot area for additional warmth
  • Super-light 20D Nylon shel...Read More
RRP $569.00-$599.00

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In Stock
EN13537 Temp Rating Comfort -4°C | 25°F
EN13537 Temp Rating Lower Limit -10°C | 14°F
EN13537 Temp Rating Extreme -29°C | -20°F
Compression Sack SizeSmall (10L to 3.3L)
Dimensions (CM)Long212 x 83Regular199 x 78
Fill WeightLong580 gramsRegular520 grams
Internal Chest CircumferenceLong152cmRegular148cm
Internal Hip CircumferenceLong152cmRegular148cm
Recommended User HeightLongup to 183cmRegularup to 170cm