Gossamer Gear Mariposa vs. Hyperlite Mountain Gear Southwest

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 MariposaFeatureHyperlite Mountain Gear Southwest
Storage
2 Compression 5
None Expanded Capacity None
0 Opening 2
N Passport
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt Y
removable Sternum Strap removable
Inside
N Laptop N
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
100D & 210D Recycled Robic NylonDyneema® 200-denier

Hyperlite Mountain Gear Southwest

Front facing view of the Hyperlite Mountain Gear Southwest
Capacity40 L
Weight0.8 kg
Dimensions70×28×17 cm
Airline fit12%
Price$380

Key differences between the Gossamer Gear Mariposa and Hyperlite Mountain Gear Southwest

Both have: backpack straps, sternum strap, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 23 accept both. 66 accept only the Gossamer Gear Mariposa, and 0 accept only the Hyperlite Mountain Gear Southwest.

Only the Gossamer Gear Mariposa fits

Aegean Airlines, Air Asia, Air Astana, Air Macau, Air Nostrum, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Atlas Global, Avianca , Bahamasair, Bangkok Airways, Biman Bangladesh, British Airways, Cambodia Angkor Air, Caribbean Airlines, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, CommutAir, Conviasa, Copa Airlines, Croatia Air, Delta Airlines, Dragonair, EL AL, EVA Air, Finnair, Frontier Airlines, Garuda Indonesia, Great Lakes Airlines, Hawaiian Airlines, Hong Kong Airlines, Iran Aseman Air, Island Air, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Kulula, Kuwait Air, Malaysia Airlines, Mango, Middle East Airlines, Monarch Airlines, Onur Air, PenAir, Qantas Airways, Republic Airways, Skywest, Inc., South African Airways, Southwest Airlines, Spirit Airlines, SriLankan Airlines, Sun Country, Thai Airways, Trans States, Travel Service Airlines, United Airlines, Uzbekistan Air, Vietnam Airlines, Virgin Atlantic, WOW Airlines.

Gossamer Gear Mariposa vs. Hyperlite Mountain Gear Southwest: which should you pack?

The Hyperlite Mountain Gear Southwest carries 4L more than the Gossamer Gear Mariposa (36L vs. 40L), while the Hyperlite Mountain Gear Southwest is the lighter pack at 0.8kg (vs. 0.9kg). 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 Hyperlite Mountain Gear Southwest; if you want to travel lighter, the Hyperlite Mountain Gear Southwest is the better call.