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Feathered Friends Hummingbird YF 30°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 — 260 g lighter than the Feathered Friends Hummingbird YF 30°F (51% less weight). If grams matter to you, that is the one to beat.
Spec Feathered Friends Hummingbird YF 30°F Therm-a-Rest NeoAir UberLite
Weight 510 g · 0.510 kg · 1.12 lb 250 g · 0.250 kg · 0.55 lb
Brand Feathered Friends Therm-a-Rest
Category Sleep System Sleep System
Feathered Friends Hummingbird YF 30°F
510 g

Ultralight 950-fill down bag rated to 30°F (-1°C).

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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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Feathered Friends Hummingbird YF 30°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 260 g (51%) lighter than the Feathered Friends Hummingbird YF 30°F (510 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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