Rab Mythic Ultra 360 (22°F) vs Sea to Summit Ember Sleeping Bag
Weight and specs compared for 2026 — and which one to choose.
Spring/fall sleeping bag at 21.4 oz (606g) with 900-fill hydrophobic European goose down and integrated thermal liner technology.
Full details →Three-season sleeping bag with 850+ UltraDry hydrophobic down, 5.1L pack size, and a rectangular zipper profile for comfort. Men's regular size.
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Rab Mythic Ultra 360 (22°F) vs Sea to Summit Ember Sleeping Bag: which should you buy?
If saving weight is your priority, the Rab Mythic Ultra 360 (22°F) wins — at 606 g it is 3 g (0%) 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.