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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.
Zpacks Arc Blast 55L
450 g
Frameless Dyneema pack with excellent load carry for its weight.
Full details →Zpacks Arc Haul Ultra 60L
510 g
Ultralight framed Dyneema pack. One of the lightest framed packs.
Full details →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.