Sea to Summit Ascent Sleeping Bag
Best versatile sleeping bag for side sleepers seeking adjustable ventilation.
A highly adaptable bag that excels at temperature regulation thanks to a unique multi-zipper system. It offers a generous fit that avoids the claustrophobia of traditional mummy bags without sacrificing thermal efficiency.
$449.00
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Who it's for
- Campers seeking adaptable comfort across varying seasonal temperatures.
- Side sleepers and restless movers who feel restricted in narrow bags.
- Backpackers prioritizing lightweight warmth and reliable performance in humid environments.
Who should skip it
- Ounce-counting thru-hikers seeking the absolute lightest gear available.
- Budget-conscious weekenders looking for a basic, affordable sleeping solution.
- Minimalists who prefer simple, foolproof gear with fewer failure points.
Performance breakdown
Thermal Versatility
The Free Flow zip system offers unmatched control across varying temperatures.
Insulation Efficiency
High-loft 750+ down provides excellent warmth-to-weight ratio for three-season use.
Sleep Comfort
Relaxed mummy cut offers freedom of movement without sacrificing thermal retention.
Build Durability
Recycled nylon shell balances lightweight packability with necessary trail-ready toughness.
Down Stability
Box baffle construction effectively prevents cold spots caused by down migration.
System Integration
Thoughtful design allows for seamless pairing with other bags for couples.
Key Specs
Temperature Rating
15 degrees F
Insulation Type
750+ fill power goose down
Shell Material
20D recycled nylon
Lining Material
20D recycled nylon
Weight
2.25 lbs
Max User Height
78 inches
Sleeping Bag Shape
Relaxed mummy
Zipper Location
Side
Water Resistant
Yes
Season Rating
3-season
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