Hyperlite Mountain Gear 20 Degree Mummy Sleeping Bag vs Katabatic Gear Sawatch 15
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-...
Full details →15F down quilt with 900+ fill power and a Pertex Quantum shell, packing down to roughly 7 liters for cold-weather trips.
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Hyperlite Mountain Gear 20 Degree Mummy Sleeping Bag vs Katabatic Gear Sawatch 15: which should you buy?
If saving weight is your priority, the Katabatic Gear Sawatch 15 wins — at 700 g it is 3 g (0%) lighter than the Hyperlite Mountain Gear 20 Degree Mummy Sleeping Bag (703 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.