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Atom Packs Pulse EP50 vs Six Moon Designs Swift X

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 Atom Packs Pulse EP50 Six Moon Designs Swift X
Weight 680 g · 0.680 kg · 1.50 lb
starting weight, medium torso size
 765 g · 0.765 kg · 1.69 lb
Brand Atom Packs Six Moon Designs
Category Backpack Backpack
Atom Packs Pulse EP50
680 g

UK-made 50L ultralight thru-hiking pack with a carbon hooped frame and EcoPak fabric, carrying loads up to ~14kg comfortably.

See it in your base weight → Full details →
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.

See it in your base weight → Full details →

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Atom Packs Pulse EP50 vs Six Moon Designs Swift X: 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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