Aer Capsule Pack Max (40L) vs. Cotopaxi Allpa Travel Pack 35L 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 35L Del Día
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
Y Passport N
Y Passthrough N
Carry
hideable Backpack hideable
optional Hip Belt removable
removable Sternum Strap Y
Inside
15in Laptop 15in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
optional Rain-fly N
1 Water Bottle Holder N
Y Water Resistant Y
Material
1680D Cordura® ballistic nylon exterior100% repurposed nylon

Cotopaxi Allpa Travel Pack 35L Del Día

Front facing view of the Cotopaxi Allpa Travel Pack 35L Del Día
Capacity35 L
Weight1.587 kg
Dimensions51×30×20 cm
Airline fit89%
Price$180

Key differences between the Aer Capsule Pack Max (40L) and Cotopaxi Allpa Travel Pack 35L Del Día

Both have: 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 84 accept only the Cotopaxi Allpa Travel Pack 35L Del Día.

Only the Cotopaxi Allpa Travel Pack 35L Del Día fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Serbia, Air Seychelles, All Nipon Airways, ANA, Asiana Airlines, ATA Airlines, Austrian, Azerbaijan Airlines, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, Caribbean Airlines, Cayman Airways, China Eastern, Croatia Air, Czech Airlines, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, Fiji Airways, Flair Air, flybe, Gol Linhas Aereas, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Oman Air, Pakistan International, Peach, Porter Airlines, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Turkish Airlines, Ukraine International, VIM Airlines (Closed), Volotea, WestJet, Xiamen.

Aer Capsule Pack Max (40L) vs. Cotopaxi Allpa Travel Pack 35L Del Día: which should you pack?

The Aer Capsule Pack Max (40L) carries 5L more than the Cotopaxi Allpa Travel Pack 35L Del Día (40L vs. 35L), and the two are closely matched on weight. For carry-on flexibility, the Cotopaxi Allpa Travel Pack 35L Del Día fits 89% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Capsule Pack Max (40L); if you want to travel lighter, the Cotopaxi Allpa Travel Pack 35L Del Día is the better call.