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Sea to Summit Spark 30 Sleeping Bag vs Therm-a-Rest NeoAir UberLite

Weight and specs compared for 2026 — and which one to choose.

Therm-a-Rest NeoAir UberLite is the lighter option — 232 g lighter than the Sea to Summit Spark 30 Sleeping Bag (48% less weight). If grams matter to you, that is the one to beat.
Spec Sea to Summit Spark 30 Sleeping Bag Therm-a-Rest NeoAir UberLite
Weight 482 g · 0.482 kg · 1.06 lb 250 g · 0.250 kg · 0.55 lb
Brand Sea to Summit Therm-a-Rest
Category Sleep System Sleep System
Sea to Summit Spark 30 Sleeping Bag
482 g

Ultralight 30°F mummy bag filled with 850+ loft down. Differential cut and ripstop shell deliver excellent warmth-to-weight ratio.

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Therm-a-Rest NeoAir UberLite
250 g

Lightest NeoAir pad. R-value 2.0 for warm conditions.

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Sea to Summit Spark 30 Sleeping Bag vs Therm-a-Rest NeoAir UberLite: which should you buy?

If saving weight is your priority, the Therm-a-Rest NeoAir UberLite wins — at 250 g it is 232 g (48%) 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.

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