Kathmandu Solus Pack 20 vs. Bellroy Classic Backpack

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

Kathmandu Solus Pack 20

Front facing view of the Kathmandu Solus Pack 20
Capacity20 L
Weight0.42 kg
Dimensions47×28×19 cm
Airline fit93%
Price$60

Feature by feature

Kathmandu Solus Pack 20FeatureBellroy Classic Backpack
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
N Passport Y
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
15in Laptop 16in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
N Water Resistant Y
Material
100% Polyester00% recycled polyester & nylon

Bellroy Classic Backpack

Front facing view of the Bellroy Classic Backpack
Capacity20 L
Weight0.75 kg
Dimensions45×32×18 cm
Airline fit95%
Price$139

Key differences between the Kathmandu Solus Pack 20 and Bellroy Classic Backpack

Both have: backpack straps.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 174 accept both. 2 accept only the Kathmandu Solus Pack 20, and 5 accept only the Bellroy Classic Backpack.

Only the Kathmandu Solus Pack 20 fits

Air Niugini, Great Lakes Airlines.

Only the Bellroy Classic Backpack fits

Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.

Kathmandu Solus Pack 20 vs. Bellroy Classic Backpack: which should you pack?

The Kathmandu Solus Pack 20 carries the same capacity as the Bellroy Classic Backpack (20L vs. 20L), while the Kathmandu Solus Pack 20 is the lighter pack at 0.42kg (vs. 0.75kg). For carry-on flexibility, the Bellroy Classic Backpack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Kathmandu Solus Pack 20; if you want to travel lighter, the Kathmandu Solus Pack 20 is the better call.