Aer Capsule Pack Max (40L) vs. Cotopaxi Allpa Travel Pack 42L Del Día

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

Aer Capsule Pack Max (40L)

by Aer
Front facing view of the Aer Capsule Pack Max (40L)
Capacity40 L
Weight0 kg
Dimensions55.9×35.6×22.9 cm
Airline fit45%
Price$250

Feature by feature

Aer Capsule Pack Max (40L)FeatureCotopaxi Allpa Travel Pack 42L Del Día
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
Y Passport Y
Y Passthrough
Carry
hideable Backpack hideable
optional Hip Belt removable
removable Sternum Strap Y
Inside
15in Laptop 15in
1 Main Compartments 1
N Organizer Y
Outside
× Hard Shell ×
optional Rain-fly Y
1 Water Bottle Holder N
Y Water Resistant Y
Material
1680D Cordura® ballistic nylon exterior100% repurposed nylon

Cotopaxi Allpa Travel Pack 42L Del Día

Front facing view of the Cotopaxi Allpa Travel Pack 42L Del Día
Capacity42 L
Weight1.905 kg
Dimensions55×34×22.5 cm
Airline fit68%
Price$200

Key differences between the Aer Capsule Pack Max (40L) and Cotopaxi Allpa Travel Pack 42L Del Día

Both have: passport pocket, backpack straps, 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. 85 accept both. 0 accept only the Aer Capsule Pack Max (40L), and 44 accept only the Cotopaxi Allpa Travel Pack 42L Del Día.

Only the Cotopaxi Allpa Travel Pack 42L Del Día 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, Caribbean Airlines, Cayman Airways, Croatia Air, 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, Sky Airlines, Swiss Int'l Air Lines, Turkish Airlines.

Aer Capsule Pack Max (40L) vs. Cotopaxi Allpa Travel Pack 42L Del Día: which should you pack?

The Cotopaxi Allpa Travel Pack 42L Del Día carries 2L more than the Aer Capsule Pack Max (40L) (40L vs. 42L), and the two are closely matched on weight. For carry-on flexibility, the Cotopaxi Allpa Travel Pack 42L Del Día fits 68% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cotopaxi Allpa Travel Pack 42L Del Día; if you want to travel lighter, the Cotopaxi Allpa Travel Pack 42L Del Día is the better call.