Tom Bihn Techonaut 30 vs. Topo Designs Global Travel Bag 30L

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

Tom Bihn Techonaut 30

Capacity30 L
Weight1 kg
Dimensions50×32×21 cm
Airline fit73%
Price$400

Feature by feature

Tom Bihn Techonaut 30FeatureTopo Designs Global Travel Bag 30L
Storage
N Compression N
None Expanded Capacity 35L
1 Opening 1
top Passport front
Y Passthrough Y
Carry
hideable Backpack hideable
removable Hip Belt removable
removable Sternum Strap removable
Inside
16in Laptop 15in
5 Main Compartments 3
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
400d Halcyon/420d nylon ripstop exterior1000D recycled nylon,

Topo Designs Global Travel Bag 30L

Front facing view of the Topo Designs Global Travel Bag 30L
Capacity30 L
Weight1.2 kg
Dimensions51×32×18 cm
Airline fit89%
Price$200

Key differences between the Tom Bihn Techonaut 30 and Topo Designs Global Travel Bag 30L

Both have: luggage passthrough, backpack straps, hip belt, sternum strap, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 136 accept both. 2 accept only the Tom Bihn Techonaut 30, and 33 accept only the Topo Designs Global Travel Bag 30L.

Only the Tom Bihn Techonaut 30 fits

Etihad Airways, Qatar Airways.

Only the Topo Designs Global Travel Bag 30L fits

Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.

Tom Bihn Techonaut 30 vs. Topo Designs Global Travel Bag 30L: which should you pack?

The Tom Bihn Techonaut 30 carries the same capacity as the Topo Designs Global Travel Bag 30L (30L vs. 30L), while the Tom Bihn Techonaut 30 is the lighter pack at 1kg (vs. 1.2kg). For carry-on flexibility, the Topo Designs Global Travel Bag 30L fits 89% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Tom Bihn Techonaut 30; if you want to travel lighter, the Tom Bihn Techonaut 30 is the better call.