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Therm-a-Rest NeoAir UberLite vs Western Mountaineering AstraLite

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

Therm-a-Rest NeoAir UberLite is the lighter option — 246 g lighter than the Western Mountaineering AstraLite (50% less weight). If grams matter to you, that is the one to beat.
Spec Therm-a-Rest NeoAir UberLite Western Mountaineering AstraLite
Weight 250 g · 0.250 kg · 0.55 lb 496 g · 0.496 kg · 1.09 lb
Brand Therm-a-Rest Western Mountaineering
Category Sleep System Sleep System
Therm-a-Rest NeoAir UberLite
250 g

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

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Western Mountaineering AstraLite
496 g

Ultralight 3-season sleeping bag with 850fp down and 12D shell. Designed for fast-and-light alpine pursuits and long trail journeys.

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Therm-a-Rest NeoAir UberLite vs Western Mountaineering AstraLite: which should you buy?

If saving weight is your priority, the Therm-a-Rest NeoAir UberLite wins — at 250 g it is 246 g (50%) lighter than the Western Mountaineering AstraLite (496 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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