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Nunatak Sastrugi Sleeping Bag (22°F) vs Zpacks Zip Around Sleeping Bag 20°F

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Nunatak Sastrugi Sleeping Bag (22°F) Zpacks Zip Around Sleeping Bag 20°F
Weight 614 g · 0.614 kg · 1.35 lb 612 g · 0.612 kg · 1.35 lb
size Standard-Medium (fits up to 6'0"); page has no 'Regular'
Brand Nunatak Zpacks
Category Sleep System Sleep System
Nunatak Sastrugi Sleeping Bag (22°F)
614 g

Custom ultralight sleeping bag with 900-fill goose down. 614g for 22-degree regular-width medium-length configuration. Made to order with customization options

See it in your base weight → Full details →
Zpacks Zip Around Sleeping Bag 20°F
612 g

900-fill down sleeping bag with full-length side zipper for easy entry and temperature regulation. Rated to -7°C, excellent for thru-hikers seeking packable, ve...

See it in your base weight → Full details →

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Nunatak Sastrugi Sleeping Bag (22°F) vs Zpacks Zip Around Sleeping Bag 20°F: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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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