Deuter Aviant Carry On 28 SL vs. OPPOSETHIS Ark - 2020

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

Deuter Aviant Carry On 28 SL

Front facing view of the Deuter Aviant Carry On 28 SL
Capacity28 L
Weight1.02 kg
Dimensions50×33×20 cm
Airline fit91%
Price$104

Feature by feature

Deuter Aviant Carry On 28 SLFeatureOPPOSETHIS Ark - 2020
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
N Passport N
N Passthrough N
Carry
hideable Backpack N
N Hip Belt N
N Sternum Strap Y
Inside
15in Laptop 16in
1 Main Compartments 1
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 1
Y Water Resistant Y
Material
600D PES, 420D PA800x600D lightweight waterproof nylon-polyester blend

OPPOSETHIS Ark - 2020

Front facing view of the OPPOSETHIS Ark - 2020
Capacity25 L
Weight0.95 kg
Dimensions49×30×17 cm
Airline fit92%
Price$244

Key differences between the Deuter Aviant Carry On 28 SL and OPPOSETHIS Ark - 2020

Both have: built-in organizer, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 172 accept both. 0 accept only the Deuter Aviant Carry On 28 SL, and 1 accept only the OPPOSETHIS Ark - 2020.

Only the OPPOSETHIS Ark - 2020 fits

Air Niugini.

Deuter Aviant Carry On 28 SL vs. OPPOSETHIS Ark - 2020: which should you pack?

The Deuter Aviant Carry On 28 SL carries 3L more than the OPPOSETHIS Ark - 2020 (28L vs. 25L), while the OPPOSETHIS Ark - 2020 is the lighter pack at 0.95kg (vs. 1.02kg). For carry-on flexibility, the OPPOSETHIS Ark - 2020 fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Deuter Aviant Carry On 28 SL; if you want to travel lighter, the OPPOSETHIS Ark - 2020 is the better call.