Katabatic Gear Flex 22 Quilt vs Sea to Summit Spark Pro Down Sleeping Bag
Weight and specs compared for 2026 — and which one to choose.
22°F down quilt with 900-fill-power goose down and adjustable footbox. Regular size. Highly packable and ultralight for 3-season backpacking.
Check price Full details →Ultralight down sleeping bag at 765g with 900+ fillpower RDS-certified down, 15°F rating and Free-Flow Zip system for versatility.
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Katabatic Gear Flex 22 Quilt vs Sea to Summit Spark Pro Down Sleeping Bag: which should you buy?
If saving weight is your priority, the Katabatic Gear Flex 22 Quilt wins — at 646 g it is 119 g (16%) lighter than the Sea to Summit Spark Pro Down Sleeping Bag (765 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.