Kathmandu Katabatic 28L Pack vs. Deuter Attack 20

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

Kathmandu Katabatic 28L Pack

Front facing view of the Kathmandu Katabatic 28L Pack
Capacity28 L
Weight0.906 kg
Dimensions52×29×28 cm
Airline fit14%
Price$120

Feature by feature

Kathmandu Katabatic 28L PackFeatureDeuter Attack 20
Storage
Y Compression Y
None Expanded Capacity None
4 Opening 4
N Passport N
N Passthrough N
Carry
Y Backpack Y
Y Hip Belt removable
Y Sternum Strap Y
Inside
N Laptop N
1 Main Compartments 1
Y Organizer Y
Outside
× Hard Shell ×
optional Rain-fly Y
2 Water Bottle Holder 2
Y Water Resistant Y
Material
100% Polyester600D PES Coat, 225D PES Ripstop

Deuter Attack 20

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

Key differences between the Kathmandu Katabatic 28L Pack and Deuter Attack 20

Both have: compression straps, backpack straps, sternum strap, built-in organizer, 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. 27 accept both. 0 accept only the Kathmandu Katabatic 28L Pack, and 147 accept only the Deuter Attack 20.

Only the Deuter Attack 20 fits

Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Astana, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Macau, Air Malta, Air Mauritius, Air Niugini, Air Nostrum, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Conviasa, Copa Airlines, Czech Airlines, Delta Airlines, Dragonair, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Frontier Airlines, Garuda Indonesia, Gol Linhas Aereas, Great Lakes Airlines, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Japan Airlines, Jet Airways, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Kulula, Kuwait Air, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Oman Air, Onur Air, Pakistan International, Peach, PenAir, Porter Airlines, Qantas Airways, Qatar Airways, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Skywest, Inc., South African Airways, Southwest Airlines, Spirit Airlines, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Thai Airways, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, Travel Service Airlines, TUI, Turkish Airlines, Ukraine International, United Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Volotea, WestJet, WOW Airlines, Xiamen.

Kathmandu Katabatic 28L Pack vs. Deuter Attack 20: which should you pack?

The Kathmandu Katabatic 28L Pack carries 8L more than the Deuter Attack 20 (28L vs. 20L), while the Kathmandu Katabatic 28L Pack is the lighter pack at 0.906kg (vs. 1.55kg). 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 Kathmandu Katabatic 28L Pack; if you want to travel lighter, the Kathmandu Katabatic 28L Pack is the better call.