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Zpacks Sleeping Bag 20°F vs Zpacks Zip Around Sleeping Bag

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

Zpacks Sleeping Bag 20°F is the lighter option — 215 g lighter than the Zpacks Zip Around Sleeping Bag (35% less weight). If grams matter to you, that is the one to beat.
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Spec Zpacks Sleeping Bag 20°F Zpacks Zip Around Sleeping Bag
Weight 397 g · 0.397 kg · 0.88 lb 612 g · 0.612 kg · 1.35 lb
Brand Zpacks Zpacks
Category Sleep System Sleep System
Zpacks Sleeping Bag 20°F
397 g

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

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Zpacks Zip Around Sleeping Bag
612 g

900-fill-power down sleeping bag with unique side-entry zipper. Eliminates the draft collar for a cleaner, lighter design.

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Zpacks Sleeping Bag 20°F vs Zpacks Zip Around Sleeping Bag: which should you buy?

If saving weight is your priority, the Zpacks Sleeping Bag 20°F wins — at 397 g it is 215 g (35%) lighter than the Zpacks Zip Around Sleeping Bag (612 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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