Sea to Summit Ascent AcII
Best versatile sleeping bag for side sleepers and variable climates.
This versatile three-season bag balances weight and warmth, making it a reliable companion for varied backcountry conditions. The unique triple-zipper system offers exceptional ventilation control, while the hydrophobic down insulation ensures consistent loft even when moisture levels rise.
$429.00
at
Sea to Summit
More Ascent options
Who it's for
- Campers seeking adaptable temperature control for varying seasonal conditions
- Backpackers prioritizing thermal efficiency and a lightweight pack
- Side sleepers and restless movers who feel restricted in narrow bags
Who should skip it
- Ultralight purists with extremely limited internal pack volume
- Minimalists who prefer a simple, single-entry sleeping bag design
- Budget-conscious hikers looking for a basic, no-frills insulation layer
Performance breakdown
Thermal Versatility
The multi-zipper system adapts effortlessly to fluctuating backcountry temperatures.
Sleeping Comfort
Relaxed mummy cut offers side sleepers much-needed room to move.
Moisture Management
Treated down insulation maintains loft and warmth in damp conditions.
Packability
Compresses down to a compact size for efficient backpack storage.
Weight Efficiency
Solid weight-to-warmth ratio for three-season backpacking adventures.
Cold Spot Prevention
Anatomical footbox design effectively traps heat where you need it most.
Key Specs
Weight
2.5 lbs
Temperature Rating
30 degrees Fahrenheit
Shape
Relaxed Mummy
Insulation Type
Down
Fill Power
750 cubic inches per ounce
Season Rating
3-Season
Compressed Volume
5.5 liters
Water Resistant
Yes
Zipper Location
Left and Right
Has Draft Collar
Yes
Know before you buy
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