Sea to Summit Ether Light XT vs Western Mountaineering AstraLite Quilt 26F

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

Sea to Summit Ether Light XT is the lighter option — 19 g lighter than the Western Mountaineering AstraLite Quilt 26F (4% less weight). If grams matter to you, that is the one to beat.

Spec	Sea to Summit Ether Light XT	Western Mountaineering AstraLite Quilt 26F
Weight	435 g · 0.435 kg · 0.96 lb	454 g · 0.454 kg · 1.00 lb
Brand	Sea to Summit	Western Mountaineering
Category	Sleep System	Sleep System

Sea to Summit Ether Light XT

435 g

Ultralight air sleeping pad with 3D construction for comfort.

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Western Mountaineering AstraLite Quilt 26F

454 g

First quilt from Western Mountaineering. 850fp European down, rated to 26F. 10D/12D shell. Extremely packable at 454g. Premium craftsmanship.

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Sea to Summit Ether Light XT vs Western Mountaineering AstraLite Quilt 26F: which should you buy?

If saving weight is your priority, the Sea to Summit Ether Light XT wins — at 435 g it is 19 g (4%) lighter than the Western Mountaineering AstraLite Quilt 26F (454 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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