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Sea to Summit Aeros Ultralight Pillow (Regular) vs Western Mountaineering AstraLite 26°F Sleeping Bag

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

Sea to Summit Aeros Ultralight Pillow (Regular) is the lighter option — 436 g lighter than the Western Mountaineering AstraLite 26°F Sleeping Bag (88% less weight). If grams matter to you, that is the one to beat.
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Spec Sea to Summit Aeros Ultralight Pillow (Regular) Western Mountaineering AstraLite 26°F Sleeping Bag
Weight 60 g · 0.060 kg · 0.13 lb 496 g · 0.496 kg · 1.09 lb
Brand Sea to Summit Western Mountaineering
Category Sleep System Sleep System
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.

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Western Mountaineering AstraLite 26°F Sleeping Bag
496 g

Premium 26°F sleeping bag with 850-fill ethically sourced goose down. Continuous-baffle construction eliminates cold spots.

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Sea to Summit Aeros Ultralight Pillow (Regular) vs Western Mountaineering AstraLite 26°F Sleeping Bag: which should you buy?

If saving weight is your priority, the Sea to Summit Aeros Ultralight Pillow (Regular) wins — at 60 g it is 436 g (88%) lighter than the Western Mountaineering AstraLite 26°F Sleeping Bag (496 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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