Sea to Summit Trek Down Sleeping Bag
Best versatile choice for side sleepers seeking extra room and warmth.
This is the antidote to the claustrophobic mummy bag. By prioritizing a spacious, rectangular cut and a versatile zip system that opens completely flat, it trades the maximum thermal efficiency of a tight cocoon for the freedom to sprawl out and regulate your temperature like you’re in your own bed.
$364.00
at
Sea to Summit
More Trek options
Who it's for
- Restless sleepers who need extra space to move comfortably
- Campers seeking adaptable ventilation for varying overnight temperatures
- Backpackers prioritizing a balance of packability and weather protection
Who should skip it
- Ounce-counting thru-hikers focused on minimizing their base pack weight
- Minimalists with limited internal storage space in smaller packs
- Extreme cold-weather campers requiring maximum thermal efficiency and retention
Performance breakdown
Versatility
The zip system effortlessly transitions from sleeping bag to full quilt.
Freedom of movement
Tapered-rectangular shape eliminates the claustrophobia typical of traditional mummy bags.
Moisture resistance
Treated down insulation maintains loft and warmth in damp, humid conditions.
Packability
Respectable compression for car camping, though bulkier than ultralight backpacking gear.
Thermal efficiency
Solid warmth for three-season use without sacrificing comfort or airflow.
Material durability
Recycled 20D polyester shell balances lightweight feel with rugged daily reliability.
Key Specs
Weight
2.47 lbs
Compressed Volume
8.2 liters
Temperature Rating
30 degrees Fahrenheit
Insulation Type
650+ fillpower duck down
Shell Material
Recycled 20D polyester
Lining Material
Polyester
Sleeping Bag Shape
Tapered rectangular
Water Resistant
Yes
Sleeping Bag Type
Camping
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