Gossamer Gear Mariposa 60L Backpack vs Osprey Exos 38
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.
Check price Full details →Ultralight ventilated multi-day pack with AirSpeed suspended mesh backpanel and removable top lid for fast-and-light backpacking.
Check price Full details →Gossamer Gear Mariposa 60L Backpack vs Osprey Exos 38: which should you buy?
If saving weight is your priority, the Gossamer Gear Mariposa 60L Backpack wins — at 970 g it is 220 g (18%) lighter than the Osprey Exos 38 (1,190 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.