Therm-a-Rest NeoAir UberLite vs Western Mountaineering HighLite 35F

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

Therm-a-Rest NeoAir UberLite is the lighter option — 210 g lighter than the Western Mountaineering HighLite 35F (46% less weight). If grams matter to you, that is the one to beat.

Spec	Therm-a-Rest NeoAir UberLite	Western Mountaineering HighLite 35F
Weight	250 g · 0.250 kg · 0.55 lb	460 g · 0.460 kg · 1.01 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 HighLite 35F

460 g

Ultralight 850-fill ethical down mummy bag rated 35F with 7D ripstop nylon shell. Best-in-class warmth-to-weight ratio for three-season use.

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Therm-a-Rest NeoAir UberLite vs Western Mountaineering HighLite 35F: which should you buy?

If saving weight is your priority, the Therm-a-Rest NeoAir UberLite wins — at 250 g it is 210 g (46%) lighter than the Western Mountaineering HighLite 35F (460 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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