Cumulus Aerial 250 vs Yamatomichi UL Pad 100cm
Weight and specs compared for 2026 — and which one to choose.
Ultralight down sleeping bag with 900 FP goose down, single-layer design with no zipper, perfect for thru-hiking and backpacking.
Full details →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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Cumulus Aerial 250 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 310 g (81%) lighter than the Cumulus Aerial 250 (385 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.