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Gregory Baltoro 75 vs Osprey Aether 65
Weight and specs compared for 2026 — and which one to choose.
Osprey Aether 65 is the lighter option — 150 g lighter than the Gregory Baltoro 75 (6% less weight). If grams matter to you, that is the one to beat.
Gregory Baltoro 75
2,360 g
Workhorse 75L pack for extended expeditions and heavy loads.
Full details →Osprey Aether 65
2,210 g
Heavy-load backpacking pack with Fit-on-the-Fly adjustable harness and hipbelt and an AirScape backpanel for extended trips.
Check price Full details →Gregory Baltoro 75 vs Osprey Aether 65: which should you buy?
If saving weight is your priority, the Osprey Aether 65 wins — at 2,210 g it is 150 g (6%) lighter than the Gregory Baltoro 75 (2,360 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.