Therm-a-Rest Hyperion 20 vs Zpacks Solo Quilt 20F

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

Zpacks Solo Quilt 20F is the lighter option — 232 g lighter than the Therm-a-Rest Hyperion 20 (41% less weight). If grams matter to you, that is the one to beat.

Spec	Therm-a-Rest Hyperion 20	Zpacks Solo Quilt 20F
Weight	567 g · 0.567 kg · 1.25 lb	335 g · 0.335 kg · 0.74 lb
Brand	Therm-a-Rest	Zpacks
Category	Sleep System	Sleep System

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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Zpacks Solo Quilt 20F

335 g

900-fill power down quilt with 20F (-7C) temperature rating in ultralight DCF shell. Pad attachment straps and adjustable snap footbox included.

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Therm-a-Rest Hyperion 20 vs Zpacks Solo Quilt 20F: which should you buy?

If saving weight is your priority, the Zpacks Solo Quilt 20F wins — at 335 g it is 232 g (41%) lighter than the Therm-a-Rest Hyperion 20 (567 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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