Gregory Alpaca 40 vs. Exped Transit 40

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

Gregory Alpaca 40

Capacity40 L
Weight1.2 kg
Dimensions57.9×33.8×28.7 cm
Airline fit1%
Price$140

Feature by feature

Gregory Alpaca 40FeatureExped Transit 40
Storage
N Compression Y
None Expanded Capacity None
0 Opening 0
side Passport N
N Passthrough N
Carry
removable Backpack removable
N Hip Belt N
N Sternum Strap Y
Inside
N Laptop N
3 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
40% Recycled 900D Polyester Ripstop with TPU Weather resistant coating840 D Oxford nylon, PU coated, 1'500 mm water column Oeko-Tex 100 certified

Exped Transit 40

Front facing view of the Exped Transit 40
Capacity40 L
Weight0.8 kg
Dimensions60×33×25 cm
Airline fit5%
Price$88

Key differences between the Gregory Alpaca 40 and Exped Transit 40

Both have: backpack straps, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 2 accept both. 0 accept only the Gregory Alpaca 40, and 8 accept only the Exped Transit 40.

Only the Exped Transit 40 fits

Adria Airways, Air New Zealand, Conviasa, Frontier Airlines, Island Air, PenAir, Southwest Airlines, Sun Country.

Gregory Alpaca 40 vs. Exped Transit 40: which should you pack?

The Gregory Alpaca 40 carries the same capacity as the Exped Transit 40 (40L vs. 40L), while the Exped Transit 40 is the lighter pack at 0.8kg (vs. 1.2kg). For carry-on flexibility, the Exped Transit 40 fits 5% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Gregory Alpaca 40; if you want to travel lighter, the Exped Transit 40 is the better call.