Nomatic McKinnon Cube Pack vs. OPPOSETHIS Invisible Rolltop

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

Nomatic McKinnon Cube Pack

Front facing view of the Nomatic McKinnon Cube Pack
Capacity21 L
Weight0.6 kg
Dimensions45×34×19 cm
Airline fit95%
Price$125

Feature by feature

Nomatic McKinnon Cube PackFeatureOPPOSETHIS Invisible Rolltop
Storage
N Compression N
None Expanded Capacity 26L
4 Opening 2
N Passport N
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
Y Sternum Strap removable
Inside
N Laptop 17in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
Nylon800x600D lightweight waterproof nylon-polyester blend

OPPOSETHIS Invisible Rolltop

Front facing view of the OPPOSETHIS Invisible Rolltop
Capacity21 L
Weight0.9 kg
Dimensions45×39×15 cm
Airline fit59%
Price$185

Key differences between the Nomatic McKinnon Cube Pack and OPPOSETHIS Invisible Rolltop

Both have: backpack straps, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 112 accept both. 67 accept only the Nomatic McKinnon Cube Pack, and 0 accept only the OPPOSETHIS Invisible Rolltop.

Only the Nomatic McKinnon Cube Pack fits

Aerolineas Argentinas, Air Asia, Air France, Air India, Air Macau, Air Mauritius, Air Tahiti, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, American Eagle, Avianca , Bahamasair, Bangkok Airways, Biman Bangladesh, Boliviana de Aviacion, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, CommutAir, Conviasa, Copa Airlines, Delta Airlines, Dragonair, easyJet, Emirates Airlines, EVA Air, flybe, Garuda Indonesia, Hawaiian Airlines, Hong Kong Airlines, Indigo, InselAir, Jet Airways, jetBlue Airways, Jetstar Airways, Jetstar Asia, Kenya Airways, KLM, Kulula, LATAM , Liat Airlines, Malaysia Airlines, Mango, Pakistan International, Qantas Airways, Qatar Airways, Ravn Alaska, Regional Express, Republic Airways, Royal Brunei Airlines, Scoot, Sky Airlines, Skywest, Inc., South African Airways, SriLankan Airlines, Tiger Airways, Trans States, United Airlines, Vietnam Airlines, Virgin Atlantic, Virgin Australia, WestJet.

Nomatic McKinnon Cube Pack vs. OPPOSETHIS Invisible Rolltop: which should you pack?

The Nomatic McKinnon Cube Pack carries the same capacity as the OPPOSETHIS Invisible Rolltop (21L vs. 21L), while the Nomatic McKinnon Cube Pack is the lighter pack at 0.6kg (vs. 0.9kg). For carry-on flexibility, the Nomatic McKinnon Cube Pack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Nomatic McKinnon Cube Pack; if you want to travel lighter, the Nomatic McKinnon Cube Pack is the better call.