Gregory Alpaca 40 vs. Patagonia Black Hole® Duffel Bag 70L

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 40FeaturePatagonia Black Hole® Duffel Bag 70L
Storage
N Compression Y
None Expanded Capacity None
0 Opening 0
side Passport
N Passthrough
Carry
removable Backpack removable
N Hip Belt N
N Sternum Strap N
Inside
N Laptop N
3 Main Compartments 1
N Organizer Y
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 coating900-denier 100% postconsumer recycled polyester ripstop, 200-denier 100% recycled polyester

Patagonia Black Hole® Duffel Bag 70L

Front facing view of the Patagonia Black Hole® Duffel Bag 70L
Capacity70 L
Weight1.44 kg
Dimensions72×45×34 cm
Airline fit1%
Price$158

Key differences between the Gregory Alpaca 40 and Patagonia Black Hole® Duffel Bag 70L

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. 1 accept both. 1 accept only the Gregory Alpaca 40, and 0 accept only the Patagonia Black Hole® Duffel Bag 70L.

Only the Gregory Alpaca 40 fits

Virgin America.

Gregory Alpaca 40 vs. Patagonia Black Hole® Duffel Bag 70L: which should you pack?

The Patagonia Black Hole® Duffel Bag 70L carries 30L more than the Gregory Alpaca 40 (40L vs. 70L), while the Gregory Alpaca 40 is the lighter pack at 1.2kg (vs. 1.44kg). For carry-on flexibility, the Gregory Alpaca 40 fits 1% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Patagonia Black Hole® Duffel Bag 70L; if you want to travel lighter, the Gregory Alpaca 40 is the better call.