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Feathered Friends Hummingbird YF 30°F vs Yamatomichi UL Pad 100cm

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

Yamatomichi UL Pad 100cm is the lighter option — 435 g lighter than the Feathered Friends Hummingbird YF 30°F (85% less weight). If grams matter to you, that is the one to beat.
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Spec Feathered Friends Hummingbird YF 30°F Yamatomichi UL Pad 100cm
Weight 510 g · 0.510 kg · 1.12 lb 75 g · 0.075 kg · 0.17 lb
Brand Feathered Friends Yamatomichi
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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Yamatomichi UL Pad 100cm
75 g

Ultralight closed-cell foam sleeping pad, 100cm length, one of the world's lightest sleep pads at just 75g with minimalist ultralight design

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Feathered Friends Hummingbird YF 30°F vs Yamatomichi UL Pad 100cm: which should you buy?

If saving weight is your priority, the Yamatomichi UL Pad 100cm wins — at 75 g it is 435 g (85%) 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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