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Feathered Friends Hummingbird YF 30°F vs Western Mountaineering MegaLite 35°F

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

Both weigh the same at 510 g, so choose on features, price and fit.
Spec Feathered Friends Hummingbird YF 30°F Western Mountaineering MegaLite 35°F
Weight 510 g · 0.510 kg · 1.12 lb 510 g · 0.510 kg · 1.12 lb
Brand Feathered Friends Western Mountaineering
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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Western Mountaineering MegaLite 35°F
510 g

Ultralight 850-fill down bag for warm summer conditions.

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Feathered Friends Hummingbird YF 30°F vs Western Mountaineering MegaLite 35°F: which should you buy?

On weight these two are identical (510 g), so your decision comes down to features, fit and price. Check the full details and current price for each above.

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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