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Sea to Summit Ember Down Sleeping Bag vs Yamatomichi UL Pad 100cm

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

Yamatomichi UL Pad 100cm is the lighter option — 534 g lighter than the Sea to Summit Ember Down Sleeping Bag (88% less weight). If grams matter to you, that is the one to beat.
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Spec Sea to Summit Ember Down Sleeping Bag Yamatomichi UL Pad 100cm
Weight 609 g · 0.609 kg · 1.34 lb 75 g · 0.075 kg · 0.17 lb
Brand Sea to Summit Yamatomichi
Category Sleep System Sleep System
Sea to Summit Ember Down Sleeping Bag
609 g

850+ Ultradry down sleeping bag rated to 9°C; packs to 5.1L with soft Thermolite liner and recycled shell fabric.

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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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Sea to Summit Ember Down Sleeping Bag 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 534 g (88%) lighter than the Sea to Summit Ember Down Sleeping Bag (609 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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