Six Moon Designs Swift X vs Zpacks Bagger Ultra 25L Backpack
Weight and specs compared for 2026 — and which one to choose.
Highly configurable 50L ultralight pack with removable stay, hip belt and vest harness options to dial in fit and weight.
Check price Full details →Ultralight day-hiking and short overnight pack in DCF. Minimalist design with padded back panel, sternum strap, and hip belt attachment.
Check price Full details →Six Moon Designs Swift X vs Zpacks Bagger Ultra 25L Backpack: which should you buy?
If saving weight is your priority, the Zpacks Bagger Ultra 25L Backpack wins — at 365 g it is 400 g (52%) lighter than the Six Moon Designs Swift X (765 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.