Nemo Tensor Ultralight vs Zpacks Zip Around Sleeping Bag

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

Nemo Tensor Ultralight is the lighter option — 272 g lighter than the Zpacks Zip Around Sleeping Bag (44% less weight). If grams matter to you, that is the one to beat.

Spec	Nemo Tensor Ultralight	Zpacks Zip Around Sleeping Bag
Weight	340 g · 0.340 kg · 0.75 lb	612 g · 0.612 kg · 1.35 lb
Brand	Nemo	Zpacks
Category	Sleep System	Sleep System

Nemo Tensor Ultralight

340 g

Ultralight inflatable pad with minimal noise. R-value 3.5.

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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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Nemo Tensor Ultralight vs Zpacks Zip Around Sleeping Bag: which should you buy?

If saving weight is your priority, the Nemo Tensor Ultralight wins — at 340 g it is 272 g (44%) 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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