Katabatic Gear Sawatch 15 vs Sea to Summit Ember Down Sleeping Bag
Weight and specs compared for 2026 — and which one to choose.
15F down quilt with 900+ fill power and a Pertex Quantum shell, packing down to roughly 7 liters for cold-weather trips.
Full details →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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Katabatic Gear Sawatch 15 vs Sea to Summit Ember Down Sleeping Bag: which should you buy?
If saving weight is your priority, the Sea to Summit Ember Down Sleeping Bag wins — at 609 g it is 91 g (13%) lighter than the Katabatic Gear Sawatch 15 (700 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.