Sea to Summit Ascent AcII -10°c

A winter-weight down sleeping bag with a tapered rectangular shape for added comfort. Features water-resistant down that retains 60% more loft than untreated down in wet conditions. Available in Regular or Long sizes. Both sizes have a left-hand zip. Show more >
RRP: $332.81
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Sea to Summit Ascent AcII -10°c

The Sea to Summit Ascent AcII offers warmth with extra comfort. The 750+ Loft ULTRA-DRY Duck Down retains 60% more loft than untreated down in wet conditions, and the tapered rectangle shape provides extra room for a more comfortable night's sleep. A Free-Flow triple zip allows you to ventilate when needed or, if you pull both zips down, use both your hands outside of the bag without having to fully remove it. 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.

Tech specs

WEIGHTRegular: 1110g, Long: 1195g
TEMPERATURE RANGEEN -4°c Comfort to -10°c Lower
SHAPETapered Rectangle


Ascent AcII -10°c


• 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
• ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture when compared with untreated down
• Sea to Summit sleeping bags dry out 60% faster than bags with untreated down.
• 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 can be zipped to the Sea to • Summit Women’s Altitude, Journey and Venture sleeping bags

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