Aer Fit Pack 3 vs. OPPOSETHIS Invisible Two - 2020

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

Aer Fit Pack 3

by Aer
Front facing view of the Aer Fit Pack 3
Capacity18.7 L
Weight0 kg
Dimensions44×32×20 cm
Airline fit95%
Price$145

Feature by feature

Aer Fit Pack 3FeatureOPPOSETHIS Invisible Two - 2020
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
Y Passport N
Y Passthrough N
Carry
Y Backpack Y
N Hip Belt N
Y Sternum Strap N
Inside
16in Laptop 16in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
optional Rain-fly N
1 Water Bottle Holder 1
Y Water Resistant Y
Material
1680D Cordura® ballistic nylon exterior800x600D lightweight waterproof nylon-polyester blend

OPPOSETHIS Invisible Two - 2020

Front facing view of the OPPOSETHIS Invisible Two - 2020
Capacity23 L
Weight0.9 kg
Dimensions49×30×16 cm
Airline fit92%
Price$208

Key differences between the Aer Fit Pack 3 and OPPOSETHIS Invisible Two - 2020

Both have: backpack straps, laptop sleeve, 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. 172 accept both. 7 accept only the Aer Fit Pack 3, and 1 accept only the OPPOSETHIS Invisible Two - 2020.

Only the Aer Fit Pack 3 fits

Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska, Regional Express, Virgin Australia.

Only the OPPOSETHIS Invisible Two - 2020 fits

Air Niugini.

Aer Fit Pack 3 vs. OPPOSETHIS Invisible Two - 2020: which should you pack?

The OPPOSETHIS Invisible Two - 2020 carries 4.300000000000001L more than the Aer Fit Pack 3 (18.7L vs. 23L), and the two are closely matched on weight. For carry-on flexibility, the Aer Fit Pack 3 fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the OPPOSETHIS Invisible Two - 2020; if you want to travel lighter, the OPPOSETHIS Invisible Two - 2020 is the better call.