Totepack No. 2 vs. STM Trilogy

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

Totepack No. 2

Front facing view of the Totepack No. 2
Capacity16 L
Weight0.75 kg
Dimensions42×33×12 cm
Airline fit95%

Feature by feature

Totepack No. 2FeatureSTM Trilogy
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
N Passport N
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
Laptop 15in
1 Main Compartments 1
Organizer Y
Outside
× Hard Shell ×
Rain-fly N
Water Bottle Holder 2
Water Resistant Y
Material
G-1000 HeavyDuty Eco100% polyester

STM Trilogy

by Stm
Front facing view of the STM Trilogy
Capacity24 L
Weight0.64 kg
Dimensions46×30×16 cm
Airline fit94%
Price$80

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 177 accept both. 2 accept only the Totepack No. 2, and 1 accept only the STM Trilogy.

Only the Totepack No. 2 fits

Air Tahiti, Gulf Air.

Only the STM Trilogy fits

Air Niugini.

Totepack No. 2 vs. STM Trilogy: which should you pack?

The STM Trilogy carries 8L more than the Totepack No. 2 (16L vs. 24L), while the STM Trilogy is the lighter pack at 0.64kg (vs. 0.75kg). For carry-on flexibility, the Totepack No. 2 fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the STM Trilogy; if you want to travel lighter, the STM Trilogy is the better call.