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Nemo Switchback vs Western Mountaineering Ultralite 20°F

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

Nemo Switchback is the lighter option — 270 g lighter than the Western Mountaineering Ultralite 20°F (40% less weight). If grams matter to you, that is the one to beat.
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Spec Nemo Switchback Western Mountaineering Ultralite 20°F
Weight 410 g · 0.410 kg · 0.90 lb 680 g · 0.680 kg · 1.50 lb
Brand Nemo Western Mountaineering
Category Sleep System Sleep System
Nemo Switchback
410 g

Accordion-style foam pad. R-value 2.0. Budget-friendly.

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Western Mountaineering Ultralite 20°F
680 g

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

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Nemo Switchback vs Western Mountaineering Ultralite 20°F: which should you buy?

If saving weight is your priority, the Nemo Switchback wins — at 410 g it is 270 g (40%) lighter than the Western Mountaineering Ultralite 20°F (680 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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