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Six Moon Designs Fusion 55 vs Zpacks Arc Haul Ultra 60

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 Six Moon Designs Fusion 55 Zpacks Arc Haul Ultra 60
Weight 622 g · 0.622 kg · 1.37 lb 618 g · 0.618 kg · 1.36 lb
as listed, size/variant not specified on page
Brand Six Moon Designs Zpacks
Category Backpack Backpack
Six Moon Designs Fusion 55
622 g

Ultralight 55L frameless Dyneema pack.

See it in your base weight → Full details →
Zpacks Arc Haul Ultra 60
618 g

Ultralight 60L thru-hiking pack with carbon fiber frame and Ultra 100X Dyneema fabric. Seam-taped roll-top design with side water bottle pockets.

See it in your base weight → Full details →

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Six Moon Designs Fusion 55 vs Zpacks Arc Haul Ultra 60: 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 backpack page, or browse the full gear weight database.

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