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Nemo Disco 15°F vs Zpacks Sleeping Bag 20°F

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

Zpacks Sleeping Bag 20°F is the lighter option — 793 g lighter than the Nemo Disco 15°F (67% less weight). If grams matter to you, that is the one to beat.
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Spec Nemo Disco 15°F Zpacks Sleeping Bag 20°F
Weight 1,190 g · 1.190 kg · 2.62 lb 397 g · 0.397 kg · 0.88 lb
Brand Nemo Zpacks
Category Sleep System Sleep System
Nemo Disco 15°F
1,190 g

Spoon-shaped sleeping bag for side sleepers. 650-fill down.

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Zpacks Sleeping Bag 20°F
397 g

Ultralight 900-fill down sleeping bag rated to 20°F.

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Nemo Disco 15°F vs Zpacks Sleeping Bag 20°F: which should you buy?

If saving weight is your priority, the Zpacks Sleeping Bag 20°F wins — at 397 g it is 793 g (67%) lighter than the Nemo Disco 15°F (1,190 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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