Deuter Attack 20 vs. Exped Impulse 30

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

Deuter Attack 20

Front facing view of the Deuter Attack 20
Capacity20 L
Weight1.55 kg
Dimensions50×28×20 cm
Airline fit92%

Feature by feature

Deuter Attack 20FeatureExped Impulse 30
Storage
Y Compression Y
None Expanded Capacity None
4 Opening 4
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
Y Sternum Strap Y
Inside
N Laptop N
1 Main Compartments 1
Y Organizer N
Outside
× Hard Shell ×
Y Rain-fly N
2 Water Bottle Holder 2
Y Water Resistant Y
Material
600D PES Coat, 225D PES Ripstop210 D Robic HD Ripstop Nylon Carbonate PU, 2'500 mm water column

Exped Impulse 30

Front facing view of the Exped Impulse 30
Capacity30 L
Weight0 kg
Dimensions55×30×21 cm
Airline fit69%
Price$159

Key differences between the Deuter Attack 20 and Exped Impulse 30

Both have: compression straps, backpack straps, hip belt, 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. 130 accept both. 44 accept only the Deuter Attack 20, and 0 accept only the Exped Impulse 30.

Only the Deuter Attack 20 fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, Etihad Airways, flybe, Great Lakes Airlines, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Oman Air, Qatar Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, Scoot, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Ukraine International, VIM Airlines (Closed), Volotea, WestJet, Xiamen.

Deuter Attack 20 vs. Exped Impulse 30: which should you pack?

The Exped Impulse 30 carries 10L more than the Deuter Attack 20 (20L vs. 30L), and the two are closely matched on weight. For carry-on flexibility, the Deuter Attack 20 fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Exped Impulse 30; if you want to travel lighter, the Deuter Attack 20 is the better call.