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Marmot Plasma 15°F vs Western Mountaineering AstraLite Quilt 26F

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

Western Mountaineering AstraLite Quilt 26F is the lighter option — 396 g lighter than the Marmot Plasma 15°F (47% less weight). If grams matter to you, that is the one to beat.
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Spec Marmot Plasma 15°F Western Mountaineering AstraLite Quilt 26F
Weight 850 g · 0.850 kg · 1.87 lb 454 g · 0.454 kg · 1.00 lb
Brand Marmot Western Mountaineering
Category Sleep System Sleep System
Marmot Plasma 15°F
850 g

800-fill down sleeping bag rated to 15°F (-9°C).

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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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Marmot Plasma 15°F vs Western Mountaineering AstraLite Quilt 26F: which should you buy?

If saving weight is your priority, the Western Mountaineering AstraLite Quilt 26F wins — at 454 g it is 396 g (47%) lighter than the Marmot Plasma 15°F (850 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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