OPPOSETHIS Invisible CARRY-ON backpack vs. Exped Metro 20

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

OPPOSETHIS Invisible CARRY-ON backpack

Front facing view of the OPPOSETHIS Invisible CARRY-ON backpack
Capacity21 L
Weight0.85 kg
Dimensions47×32×15 cm
Airline fit92%
Price$255

Feature by feature

OPPOSETHIS Invisible CARRY-ON backpackFeatureExped Metro 20
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
Y Passport N
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
Y Sternum Strap Y
Inside
15in Laptop 15in
1 Main Compartments 1
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2
Y Water Resistant Y
Material
800x600D lightweight waterproof nylon-polyester blend600 D ripstop polyester, PU coated, 1'200 mm water column

Exped Metro 20

Front facing view of the Exped Metro 20
Capacity20 L
Weight0.72 kg
Dimensions50×28×17 cm
Airline fit92%
Price$99

Key differences between the OPPOSETHIS Invisible CARRY-ON backpack and Exped Metro 20

Both have: backpack straps, sternum strap, 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. 172 accept both. 2 accept only the OPPOSETHIS Invisible CARRY-ON backpack, and 2 accept only the Exped Metro 20.

Only the OPPOSETHIS Invisible CARRY-ON backpack fits

Regional Express, Virgin Australia.

Only the Exped Metro 20 fits

Air Niugini, Great Lakes Airlines.

OPPOSETHIS Invisible CARRY-ON backpack vs. Exped Metro 20: which should you pack?

The OPPOSETHIS Invisible CARRY-ON backpack carries 1L more than the Exped Metro 20 (21L vs. 20L), while the Exped Metro 20 is the lighter pack at 0.72kg (vs. 0.85kg). For carry-on flexibility, the OPPOSETHIS Invisible CARRY-ON backpack fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the OPPOSETHIS Invisible CARRY-ON backpack; if you want to travel lighter, the Exped Metro 20 is the better call.