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Sea to Summit Ember Sleeping Bag vs Therm-a-Rest Hyperion 20F/-6C (Regular)

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Sea to Summit Ember Sleeping Bag Therm-a-Rest Hyperion 20F/-6C (Regular)
Weight 609 g · 0.609 kg · 1.34 lb 567 g · 0.567 kg · 1.25 lb
Brand Sea to Summit Therm-a-Rest
Category Sleep System Sleep System
Sea to Summit Ember Sleeping Bag
609 g

Three-season sleeping bag with 850+ UltraDry hydrophobic down, 5.1L pack size, and a rectangular zipper profile for comfort. Men's regular size.

See it in your base weight → Full details →
Therm-a-Rest Hyperion 20F/-6C (Regular)
567 g

Ultralight 20F down mummy bag with 900-fill Nikwax Hydrophobic Down for fast-and-light backpacking.

See it in your base weight → Full details →

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Sea to Summit Ember Sleeping Bag vs Therm-a-Rest Hyperion 20F/-6C (Regular): which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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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