Gearnalysis

ULA Ohm vs. Osprey Exos Pro 55

A close look at two backpacks buyers cross-shop. The Ohm takes a modest overall edge, led by low weight, but the Exos Pro 55 has its own case.

ULA
Ohm
70GearScore
55L · Ultralight
wins 4 specs
Osprey
Exos Pro 55
67GearScore
55L · Ultralight
wins 0 specs
Check price at REI
ULA OhmOsprey Exos Pro 55
GearScore70✓67
Capacity55 L55 L
Weight1 lb 14 oz✓2 lb 1 oz
Rated load30 lb30 lb
Fabric denier200 D✓100 D
Price$250✓$330
TypeUltralightUltralight
FrameInternalInternal

Highlighted cells mark the better spec: Ohm in blue, Exos Pro 55 in amber. A blank spec is never counted as a win. Capacity is shown for context and is not scored, since more volume is a sizing choice rather than better. GearScore is the overall rating (0 to 100); re-weight it on the full backpack comparison. Prices are current MSRP.

Put the ULA Ohm next to the Osprey Exos Pro 55 and the trade-offs are clear. The Ohm wins on low weight and durability, and the Exos Pro 55 pushes back on value.

The Ohm is 3 oz lighter, tougher fabric (200D vs 100D), and $80 cheaper. On the default GearScore the Ohm leads 70 to 67.

Pick the Ohm if you care most about low weight and durability, which makes it the better call for counting grams on long miles. Pick the Exos Pro 55 if you would rather save the difference.

Common questions

Which is lighter?

The ULA Ohm. It is 3 oz lighter than the Exos Pro 55.

Which is more durable?

The ULA Ohm. It is tougher fabric (200D vs 100D) than the Exos Pro 55.

Which has the higher GearScore?

The ULA Ohm, 70 to 67 on the default algorithm. You can re-weight the factors to match your trip.

Ohm or Exos Pro 55, which should you buy?

It depends on your priorities. Go with the Ohm for low weight, or the Exos Pro 55 for the price. The spec table above shows exactly where each wins.