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Katabatic Gear Flex 22 Quilt vs Therm-a-Rest Hyperion 20

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

Therm-a-Rest Hyperion 20 is the lighter option — 79 g lighter than the Katabatic Gear Flex 22 Quilt (12% less weight). If grams matter to you, that is the one to beat.
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Spec Katabatic Gear Flex 22 Quilt Therm-a-Rest Hyperion 20
Weight 646 g · 0.646 kg · 1.42 lb 567 g · 0.567 kg · 1.25 lb
Brand Katabatic Gear Therm-a-Rest
Category Sleep System Sleep System
Katabatic Gear Flex 22 Quilt
646 g

22°F down quilt with 900-fill-power goose down and adjustable footbox. Regular size. Highly packable and ultralight for 3-season backpacking.

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Therm-a-Rest Hyperion 20
567 g

900-fill Hyperdry down mummy sleeping bag rated to 20F/-6C. 10D ripstop nylon shell with DWR treatment. Regular size.

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Katabatic Gear Flex 22 Quilt vs Therm-a-Rest Hyperion 20: which should you buy?

If saving weight is your priority, the Therm-a-Rest Hyperion 20 wins — at 567 g it is 79 g (12%) lighter than the Katabatic Gear Flex 22 Quilt (646 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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