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Sea to Summit Aeros Ultralight Pillow (Regular) vs Therm-a-Rest Hyperion 20F/-6C (Regular)
Weight and specs compared for 2026 — and which one to choose.
Sea to Summit Aeros Ultralight Pillow (Regular) is the lighter option — 507 g lighter than the Therm-a-Rest Hyperion 20F/-6C (Regular) (89% less weight). If grams matter to you, that is the one to beat.
Sea to Summit Aeros Ultralight Pillow (Regular)
60 g
Inflatable ultralight camp pillow with a curved synthetic-fill surface and multi-function valve for comfort.
Check price 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.
Check price Full details →Sea to Summit Aeros Ultralight Pillow (Regular) vs Therm-a-Rest Hyperion 20F/-6C (Regular): which should you buy?
If saving weight is your priority, the Sea to Summit Aeros Ultralight Pillow (Regular) wins — at 60 g it is 507 g (89%) lighter than the Therm-a-Rest Hyperion 20F/-6C (Regular) (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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