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Rumple Blanket vs Western Mountaineering Ultralite 20°F

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

Western Mountaineering Ultralite 20°F is the lighter option — 590 g lighter than the Rumple Blanket (46% less weight). If grams matter to you, that is the one to beat.
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Spec Rumple Blanket Western Mountaineering Ultralite 20°F
Weight 1,270 g · 1.270 kg · 2.80 lb 680 g · 0.680 kg · 1.50 lb
Brand Rumple Western Mountaineering
Category Sleep System Sleep System
Western Mountaineering Ultralite 20°F
680 g

Premium 850-fill down sleeping bag rated to 20°F (-7°C).

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Rumple Blanket vs Western Mountaineering Ultralite 20°F: which should you buy?

If saving weight is your priority, the Western Mountaineering Ultralite 20°F wins — at 680 g it is 590 g (46%) lighter than the Rumple Blanket (1,270 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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