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Osprey Aether 65 vs ULA Ohm 2.0

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

ULA Ohm 2.0 is the lighter option — 1,643 g lighter than the Osprey Aether 65 (74% less weight). If grams matter to you, that is the one to beat.
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Spec Osprey Aether 65 ULA Ohm 2.0
Weight 2,210 g · 2.210 kg · 4.87 lb 567 g · 0.567 kg · 1.25 lb
Brand Osprey ULA
Category Backpack Backpack
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.

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ULA Ohm 2.0
567 g

Ultralight 50L frameless pack with framesheet option.

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Osprey Aether 65 vs ULA Ohm 2.0: which should you buy?

If saving weight is your priority, the ULA Ohm 2.0 wins — at 567 g it is 1,643 g (74%) lighter than the Osprey Aether 65 (2,210 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.

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