Gossamer Gear Mariposa 60 vs Osprey Eja Pro 55

Weight and specs compared for 2026 — and which one to choose.

Gossamer Gear Mariposa 60 is the lighter option — 259 g lighter than the Osprey Eja Pro 55 (30% less weight). If grams matter to you, that is the one to beat.

Spec	Gossamer Gear Mariposa 60	Osprey Eja Pro 55
Weight	617 g · 0.617 kg · 1.36 lb	876 g · 0.876 kg · 1.93 lb
Brand	Gossamer Gear	Osprey
Category	Backpack	Backpack

Gossamer Gear Mariposa 60

617 g

Ultralight 60L frameless pack with sit pad back panel.

Full details →

Osprey Eja Pro 55

876 g

Women's sub-1kg thru-hiking pack built from UHMWPE fabric with an AirSpeed suspended mesh back and removable top lid.

Check price Full details →

Gossamer Gear Mariposa 60 vs Osprey Eja Pro 55: which should you buy?

If saving weight is your priority, the Gossamer Gear Mariposa 60 wins — at 617 g it is 259 g (30%) lighter than the Osprey Eja Pro 55 (876 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.

More backpack comparisons

Gossamer Gear Mariposa 60 vs Gossamer Gear Murmur 36 Hyperlight Backpack Gossamer Gear Mariposa 60 vs Salomon ADV Skin 12 Gossamer Gear Mariposa 60 vs Zpacks Nero Classic Ultra Backpack Gossamer Gear Mariposa 60 vs Zpacks Nero Classic 50L Gossamer Gear Mariposa 60 vs Zpacks Nero Classic Backpack Gossamer Gear Mariposa 60 vs Zpacks Nero Classic 40L