Gossamer Gear Mariposa vs. Ortlieb Atrack CR

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

Gossamer Gear Mariposa

Front facing view of the Gossamer Gear Mariposa
Capacity36 L
Weight0.9 kg
Dimensions56×28×14 cm
Airline fit47%
Price$315

Feature by feature

Gossamer Gear MariposaFeatureOrtlieb Atrack CR
Storage
2 Compression N
None Expanded Capacity None
0 Opening 0
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
removable Sternum Strap Y
Inside
N Laptop N
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2
Y Water Resistant Y
Material
100D & 210D Recycled Robic NylonPS33

Ortlieb Atrack CR

Front facing view of the Ortlieb Atrack CR
Capacity25 L
Weight1.22 kg
Dimensions56×26×25 cm
Airline fit27%
Price$265

Key differences between the Gossamer Gear Mariposa and Ortlieb Atrack CR

Both have: backpack straps, hip belt, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 51 accept both. 38 accept only the Gossamer Gear Mariposa, and 0 accept only the Ortlieb Atrack CR.

Only the Gossamer Gear Mariposa fits

Air Asia, Air Macau, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Avianca , Bahamasair, Bangkok Airways, Biman Bangladesh, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, CommutAir, Delta Airlines, Dragonair, EVA Air, Garuda Indonesia, Hawaiian Airlines, Hong Kong Airlines, jetBlue Airways, Jetstar Airways, Jetstar Asia, Kulula, Malaysia Airlines, Mango, Qantas Airways, Republic Airways, Skywest, Inc., South African Airways, SriLankan Airlines, Trans States, United Airlines, Vietnam Airlines, Virgin Atlantic.

Gossamer Gear Mariposa vs. Ortlieb Atrack CR: which should you pack?

The Gossamer Gear Mariposa carries 11L more than the Ortlieb Atrack CR (36L vs. 25L), while the Gossamer Gear Mariposa is the lighter pack at 0.9kg (vs. 1.22kg). For carry-on flexibility, the Gossamer Gear Mariposa fits 47% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Gossamer Gear Mariposa; if you want to travel lighter, the Gossamer Gear Mariposa is the better call.