Aarn Mountain Magic 50 Pro vs Six Moon Designs Swift X

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

Six Moon Designs Swift X is the lighter option — 45 g lighter than the Aarn Mountain Magic 50 Pro (6% less weight). If grams matter to you, that is the one to beat.

Spec	Aarn Mountain Magic 50 Pro	Six Moon Designs Swift X
Weight	810 g · 0.810 kg · 1.79 lb	765 g · 0.765 kg · 1.69 lb
Brand	Aarn	Six Moon Designs
Category	Backpack	Backpack

Aarn Mountain Magic 50 Pro

810 g

Body-balance 50L pack in 70D Robic Gridstop UHMWPE with U-Flow harness and removable front balance pockets for comfort.

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Six Moon Designs Swift X

765 g

Highly configurable 50L ultralight pack with removable stay, hip belt and vest harness options to dial in fit and weight.

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Aarn Mountain Magic 50 Pro vs Six Moon Designs Swift X: which should you buy?

If saving weight is your priority, the Six Moon Designs Swift X wins — at 765 g it is 45 g (6%) lighter than the Aarn Mountain Magic 50 Pro (810 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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