Sea to Summit Spark 30 Sleeping Bag vs Therm-a-Rest Z-Lite Sol Regular Pad
Weight and specs compared for 2026 — and which one to choose.
Ultralight 30°F mummy bag filled with 850+ loft down. Differential cut and ripstop shell deliver excellent warmth-to-weight ratio.
Full details →Foam sleeping pad regular, 14oz, R-value 2.0, reflective aluminum layers
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Sea to Summit Spark 30 Sleeping Bag vs Therm-a-Rest Z-Lite Sol Regular Pad: which should you buy?
If saving weight is your priority, the Therm-a-Rest Z-Lite Sol Regular Pad wins — at 397 g it is 85 g (18%) lighter than the Sea to Summit Spark 30 Sleeping Bag (482 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest sleep system page, or browse the full gear weight database.