Gossamer Gear Mariposa vs. Gregory Nano 28L

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 MariposaFeatureGregory Nano 28L
Storage
2 Compression 2
None Expanded Capacity None
0 Opening 0
N Passport front
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
removable Sternum Strap Y
Inside
N Laptop N
1 Main Compartments 3
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 Nylon210D High Density 40% Recycled Nylon / 450D 100% recycled Polyester with C0 DWR

Gregory Nano 28L

Front facing view of the Gregory Nano 28L
Capacity28 L
Weight0.6 kg
Dimensions54×31×23 cm
Airline fit69%
Price$101

Key differences between the Gossamer Gear Mariposa and Gregory Nano 28L

Both have: compression straps, backpack straps, hip belt, 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. 88 accept both. 1 accept only the Gossamer Gear Mariposa, and 43 accept only the Gregory Nano 28L.

Only the Gossamer Gear Mariposa fits

Great Lakes Airlines.

Only the Gregory Nano 28L fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Canada, Air Caraibes, Air France, Air India, Air Mauritius, All Nipon Airways, ANA, Austrian, Azerbaijan Airlines, Boliviana de Aviacion, Brussels Airlines, Czech Airlines, Ethiopian Airlines, Eurowings, Fiji Airways, Flair Air, Gol Linhas Aereas, Iberia, Indigo, Interjet, Iran Air, Japan Airlines, Jet Airways, Kenya Airways, KLM, LATAM , LOT Polish, Lufthansa, Mahan Air, Mesa Airlines, Norwegian, Peach, Porter Airlines, SAS Scandinavian, Scoot, Sky Airlines, Swiss Int'l Air Lines, Tiger Airways, Turkish Airlines.

Gossamer Gear Mariposa vs. Gregory Nano 28L: which should you pack?

The Gossamer Gear Mariposa carries 8L more than the Gregory Nano 28L (36L vs. 28L), while the Gregory Nano 28L is the lighter pack at 0.6kg (vs. 0.9kg). For carry-on flexibility, the Gregory Nano 28L fits 69% 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 Gregory Nano 28L is the better call.