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

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

Zpacks Classic 20°F Sleeping Bag is the lighter option — 614 g lighter than the Nemo Disco 15°F (52% less weight). If grams matter to you, that is the one to beat.
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Spec Nemo Disco 15°F Zpacks Classic 20°F Sleeping Bag
Weight 1,190 g · 1.190 kg · 2.62 lb 576 g · 0.576 kg · 1.27 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 Classic 20°F Sleeping Bag
576 g

Ultralight mummy sleeping bag with 900-fill power goose down rated to 20°F. Water-resistant down and Dyneema shell. Weighs 20.3 oz in regular size.

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

If saving weight is your priority, the Zpacks Classic 20°F Sleeping Bag wins — at 576 g it is 614 g (52%) 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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