Sea to Summit Spark
Best ultralight sleeping bag for weight-conscious backpackers seeking cold-weather warmth.
This bag is a masterclass in minimalist efficiency, stripping away non-essential features to prioritize pure warmth-to-weight performance. It is an ideal choice for weight-conscious backpackers who want a high-loft, compressible sleeping system without the bulk of traditional designs.
$578.95
at
Al's Sporting Goods
More Spark options
Sea to Summit Spark Sleeping Bag
$578.95
Sea to Summit Spark Sleeping Bag
$999.00
Sea to Summit Spark Pro Sleeping Bag
$549.00
Sea to Summit Spark Sleeping Bag
$278.00
Sea to Summit Spark Pro Sleeping Bag
$549.00
Sea to Summit Spark Pro Sleeping Bag
$648.95
Sea to Summit Spark Sleeping Bag
$578.95
Sea to Summit Spark Sleeping Bag
$349.00
Sea to Summit Spark Sleeping Bag
$349.00
Sea to Summit Spark Sleeping Bag
$349.00
Sea to Summit Spark Sleeping Bag
$278.00
Sea to Summit Spark Sleeping Bag
$349.00
Who it's for
- Thru-hikers prioritizing ultralight gear without sacrificing warmth
- Backpackers needing maximum space inside their packs
- Adventurers camping in humid or unpredictable climates
Who should skip it
- Campers who are rough on their gear
- Side sleepers needing extra room to move
- Budget-conscious buyers seeking entry-level pricing
Performance breakdown
Warmth-to-Weight Ratio
High-loft down provides exceptional thermal efficiency without adding unnecessary bulk.
Packability
Compresses down to a remarkably small footprint for effortless backpacking storage.
Thermal Regulation
Advanced baffle construction effectively prevents cold spots during freezing nights.
Entry and Exit
The minimalist zipper design prioritizes weight savings over ease of movement.
Material Durability
Ultra-light fabrics require careful handling to avoid tears in rugged terrain.
Moisture Resistance
Treated down maintains loft and insulation even in damp, humid conditions.
Still have a question?
Ask Metto anything about the Sea to Summit Spark before you decide.
