Hyperlite Mountain Gear 20 Degree Mummy Sleeping Bag vs Nemo Disco 15°F
Weight and specs compared for 2026 — and which one to choose.
New-for-2026 ultralight mummy sleeping bag with 16.7 oz of 1000 fill power down in ultralight 7D nylon shell. Temperature rating 20°F (-6°C). Designed for cold-...
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Hyperlite Mountain Gear 20 Degree Mummy Sleeping Bag vs Nemo Disco 15°F: which should you buy?
If saving weight is your priority, the Hyperlite Mountain Gear 20 Degree Mummy Sleeping Bag wins — at 703 g it is 487 g (41%) 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.