Gossamer Gear Mariposa 60L Backpack vs ULA Equipment Ultra Circuit
Weight and specs compared for 2026 — and which one to choose.
Versatile ultralight pack with internal frame and removable foam back panel. 60L capacity ideal for multi-day thru-hikes with loads up to 35 lbs.
Popular 68L ultralight backpack with Ultra fabric. Lightweight option for long-distance trails.
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.
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Gossamer Gear Mariposa 60L Backpack vs ULA Equipment Ultra Circuit: which should you buy?
If saving weight is your priority, the Gossamer Gear Mariposa 60L Backpack wins — at 970 g it is 73 g (7%) lighter than the ULA Equipment Ultra Circuit (1,043 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.