Gossamer Gear Mariposa 60 vs Zpacks Arc Haul Ultra 60
Weight and specs compared for 2026 — and which one to choose.
Ultralight 60L frameless pack with sit pad back panel.
Ultralight 60L thru-hiking pack with carbon fiber frame and Ultra 100X Dyneema fabric. Seam-taped roll-top design with side water bottle pockets.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Gossamer Gear Mariposa 60 vs Zpacks Arc Haul Ultra 60: which should you buy?
If saving weight is your priority, the Zpacks Arc Haul Ultra 60 wins — at 618 g it is 350 g (36%) lighter than the Gossamer Gear Mariposa 60 (968 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.