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Rab Mythic Ultra 180 (32°F) 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 — 150 g lighter than the Rab Mythic Ultra 180 (32°F) (38% less weight). If grams matter to you, that is the one to beat.
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Spec Rab Mythic Ultra 180 (32°F) Therm-a-Rest NeoAir UberLite
Weight 400 g · 0.400 kg · 0.88 lb 250 g · 0.250 kg · 0.55 lb
Brand Rab Therm-a-Rest
Category Sleep System Sleep System
Rab Mythic Ultra 180 (32°F)
400 g

Ultra-lightweight 3-season sleeping bag weighing just 14.1 oz (400g) with 900-fill hydrophobic goose down and titanium technology.

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Therm-a-Rest NeoAir UberLite
250 g

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

Full details →

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Rab Mythic Ultra 180 (32°F) 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 150 g (38%) lighter than the Rab Mythic Ultra 180 (32°F) (400 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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