Sea to Summit Ember Sleeping Bag vs Western Mountaineering AstraLite
Weight and specs compared for 2026 — and which one to choose.
Three-season sleeping bag with 850+ UltraDry hydrophobic down, 5.1L pack size, and a rectangular zipper profile for comfort. Men's regular size.
Full details →Ultralight 3-season sleeping bag with 850fp down and 12D shell. Designed for fast-and-light alpine pursuits and long trail journeys.
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Sea to Summit Ember Sleeping Bag vs Western Mountaineering AstraLite: which should you buy?
If saving weight is your priority, the Western Mountaineering AstraLite wins — at 496 g it is 113 g (19%) lighter than the Sea to Summit Ember 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.