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Zpacks Arc Blast 55L vs Zpacks Arc Haul Ultra 60L

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

Zpacks Arc Blast 55L is the lighter option — 60 g lighter than the Zpacks Arc Haul Ultra 60L (12% less weight). If grams matter to you, that is the one to beat.
Spec Zpacks Arc Blast 55L Zpacks Arc Haul Ultra 60L
Weight 450 g · 0.450 kg · 0.99 lb 510 g · 0.510 kg · 1.12 lb
Brand Zpacks Zpacks
Category Backpack Backpack
Zpacks Arc Blast 55L
450 g

Frameless Dyneema pack with excellent load carry for its weight.

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Zpacks Arc Haul Ultra 60L
510 g

Ultralight framed Dyneema pack. One of the lightest framed packs.

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Zpacks Arc Blast 55L vs Zpacks Arc Haul Ultra 60L: which should you buy?

If saving weight is your priority, the Zpacks Arc Blast 55L wins — at 450 g it is 60 g (12%) lighter than the Zpacks Arc Haul Ultra 60L (510 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 backpack page, or browse the full gear weight database.

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