Patagonia Tres Backpack 25L vs. Cotopaxi Nazca 24L

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

Patagonia Tres Backpack 25L

Front facing view of the Patagonia Tres Backpack 25L
Capacity25 L
Weight0.9 kg
Dimensions48×31×17 cm
Airline fit92%
Price$129

Feature by feature

Patagonia Tres Backpack 25LFeatureCotopaxi Nazca 24L
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
N Passport N
Y Passthrough N
Carry
hideable Backpack Y
N Hip Belt N
Y Sternum Strap Y
Inside
15in Laptop 15in
1 Main Compartments 1
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
630-denier 100% nylon, 200-denier 100% recycled polyester630D nylon/cotton canvas

Cotopaxi Nazca 24L

Front facing view of the Cotopaxi Nazca 24L
Capacity24 L
Weight1.33 kg
Dimensions50×27×14 cm
Airline fit92%
Price$80

Key differences between the Patagonia Tres Backpack 25L and Cotopaxi Nazca 24L

Both have: sternum strap, laptop sleeve, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 172 accept both. 2 accept only the Patagonia Tres Backpack 25L, and 2 accept only the Cotopaxi Nazca 24L.

Only the Patagonia Tres Backpack 25L fits

Regional Express, Virgin Australia.

Only the Cotopaxi Nazca 24L fits

Air Niugini, Great Lakes Airlines.

Patagonia Tres Backpack 25L vs. Cotopaxi Nazca 24L: which should you pack?

The Patagonia Tres Backpack 25L carries 1L more than the Cotopaxi Nazca 24L (25L vs. 24L), while the Patagonia Tres Backpack 25L is the lighter pack at 0.9kg (vs. 1.33kg). For carry-on flexibility, the Patagonia Tres Backpack 25L fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Patagonia Tres Backpack 25L; if you want to travel lighter, the Patagonia Tres Backpack 25L is the better call.