Bellroy Shift Backpack vs. OpposeThis Invisible Backpack 3

Two carry-on travel backpacks, compared spec for spec.

Bellroy Shift Backpack

Front facing view of the Bellroy Shift Backpack
Capacity22 L
Weight1.25 kg
Dimensions55×30×20 cm
Airline fit86%
Price$169

Feature by feature

Bellroy Shift BackpackFeatureOpposeThis Invisible Backpack 3
Storage
N Compression N
None Expanded Capacity None
3 Opening 3
N Passport top
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap removable
Inside
15in Laptop 15in
1 Main Compartments 5
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
1 Water Bottle Holder N
Y Water Resistant Y
Material
Venture-weave polyester800x600D lightweight waterproof nylon-polyester blend

OpposeThis Invisible Backpack 3

Front facing view of the OpposeThis Invisible Backpack 3
Capacity23 L
Weight0.9 kg
Dimensions49×35×19 cm
Airline fit90%
Price$250

Key differences between the Bellroy Shift Backpack and OpposeThis Invisible Backpack 3

Both have: backpack straps, sternum strap, laptop sleeve, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 162 accept both. 1 accept only the Bellroy Shift Backpack, and 9 accept only the OpposeThis Invisible Backpack 3.

Only the Bellroy Shift Backpack fits

Cayman Airways.

Only the OpposeThis Invisible Backpack 3 fits

Belavia, Etihad Airways, Liat Airlines, Oman Air, Qatar Airways, Royal Jordanian, Scoot, Tiger Airways, WestJet.

Bellroy Shift Backpack vs. OpposeThis Invisible Backpack 3: which should you pack?

The OpposeThis Invisible Backpack 3 carries 1L more than the Bellroy Shift Backpack (22L vs. 23L), while the OpposeThis Invisible Backpack 3 is the lighter pack at 0.9kg (vs. 1.25kg). For carry-on flexibility, the OpposeThis Invisible Backpack 3 fits 90% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the OpposeThis Invisible Backpack 3; if you want to travel lighter, the OpposeThis Invisible Backpack 3 is the better call.