OPPOSETHIS Invisible CARRY-ON backpack vs. Peak Design Everyday Backpack Zip

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 backpackFeaturePeak Design Everyday Backpack Zip
Storage
N Compression N
None Expanded Capacity 20L
1 Opening 1
Y Passport N
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
Y Sternum Strap removable
Inside
15in Laptop 15in
1 Main Compartments 1
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2
Y Water Resistant Y
Material
800x600D lightweight waterproof nylon-polyester blend400D double poly-coated DWR-impregnated nylon canvas shell

Peak Design Everyday Backpack Zip

Front facing view of the Peak Design Everyday Backpack Zip
Capacity20 L
Weight1.55 kg
Dimensions47×29×16 cm
Airline fit93%
Price$220

Key differences between the OPPOSETHIS Invisible CARRY-ON backpack and Peak Design Everyday Backpack Zip

Both have: backpack straps, laptop sleeve, 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. 174 accept both. 0 accept only the OPPOSETHIS Invisible CARRY-ON backpack, and 1 accept only the Peak Design Everyday Backpack Zip.

Only the Peak Design Everyday Backpack Zip fits

Air Niugini.

OPPOSETHIS Invisible CARRY-ON backpack vs. Peak Design Everyday Backpack Zip: which should you pack?

The OPPOSETHIS Invisible CARRY-ON backpack carries 1L more than the Peak Design Everyday Backpack Zip (21L vs. 20L), while the OPPOSETHIS Invisible CARRY-ON backpack is the lighter pack at 0.85kg (vs. 1.55kg). For carry-on flexibility, the Peak Design Everyday Backpack Zip fits 93% 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 OPPOSETHIS Invisible CARRY-ON backpack is the better call.