OPPOSETHIS Invisible CARRY-ON backpack vs. Cotopaxi Nazca 24L

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 backpackFeatureCotopaxi Nazca 24L
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 N
Y Water Resistant Y
Material
800x600D lightweight waterproof nylon-polyester blend630D nylon/cotton canvas

Cotopaxi Nazca 24L

Front facing view of the Cotopaxi Nazca 24L
Capacity24 L
Weight1.33 kg
Dimensions50×27×14 cm
Airline fit92%
Price$80

Key differences between the OPPOSETHIS Invisible CARRY-ON backpack and Cotopaxi Nazca 24L

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 Cotopaxi Nazca 24L.

Only the OPPOSETHIS Invisible CARRY-ON backpack fits

Regional Express, Virgin Australia.

Only the Cotopaxi Nazca 24L fits

Air Niugini, Great Lakes Airlines.

OPPOSETHIS Invisible CARRY-ON backpack vs. Cotopaxi Nazca 24L: which should you pack?

The Cotopaxi Nazca 24L carries 3L more than the OPPOSETHIS Invisible CARRY-ON backpack (21L vs. 24L), while the OPPOSETHIS Invisible CARRY-ON backpack is the lighter pack at 0.85kg (vs. 1.33kg). 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 Cotopaxi Nazca 24L; if you want to travel lighter, the OPPOSETHIS Invisible CARRY-ON backpack is the better call.