Arc'Teryx Mantis 32 Backpack vs. Peak Design Outdoor Backpack 45L

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

Arc'Teryx Mantis 32 Backpack

Front facing view of the Arc'Teryx Mantis 32 Backpack
Capacity32 L
Weight0 kg
Dimensions53×32×30 cm
Airline fit12%
Price$120

Feature by feature

Arc'Teryx Mantis 32 BackpackFeaturePeak Design Outdoor Backpack 45L
Storage
N Compression N
None Expanded Capacity 45L
1 Opening 1
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
Y Sternum Strap removable
Inside
N Laptop 16in
1 Main Compartments 1
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2 Water Bottle Holder 4, side
Y Water Resistant Y
Material
420d HD nylon plain weaveUltralight Terra Shell™ 210D ripstop

Peak Design Outdoor Backpack 45L

Front facing view of the Peak Design Outdoor Backpack 45L
Capacity35 L
Weight1.6 kg
Dimensions56×31×17 cm
Airline fit47%
Price$330

Key differences between the Arc'Teryx Mantis 32 Backpack and Peak Design Outdoor Backpack 45L

Both have: backpack straps, hip belt, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 23 accept both. 0 accept only the Arc'Teryx Mantis 32 Backpack, and 65 accept only the Peak Design Outdoor Backpack 45L.

Only the Peak Design Outdoor Backpack 45L fits

Aegean Airlines, Air Asia, Air Astana, Air Macau, Air Nostrum, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Atlas Global, Avianca , Bahamasair, Bangkok Airways, Biman Bangladesh, British Airways, Cambodia Angkor Air, Caribbean Airlines, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, CommutAir, Conviasa, Copa Airlines, Croatia Air, Delta Airlines, Dragonair, EL AL, EVA Air, Finnair, Frontier Airlines, Garuda Indonesia, Hawaiian Airlines, Hong Kong Airlines, Iran Aseman Air, Island Air, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Kulula, Kuwait Air, Malaysia Airlines, Mango, Middle East Airlines, Monarch Airlines, Onur Air, PenAir, Qantas Airways, Republic Airways, Skywest, Inc., South African Airways, Southwest Airlines, Spirit Airlines, SriLankan Airlines, Sun Country, Thai Airways, Trans States, Travel Service Airlines, United Airlines, Uzbekistan Air, Vietnam Airlines, Virgin Atlantic, WOW Airlines.

Arc'Teryx Mantis 32 Backpack vs. Peak Design Outdoor Backpack 45L: which should you pack?

The Peak Design Outdoor Backpack 45L carries 3L more than the Arc'Teryx Mantis 32 Backpack (32L vs. 35L), and the two are closely matched on weight. For carry-on flexibility, the Peak Design Outdoor Backpack 45L fits 47% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Peak Design Outdoor Backpack 45L; if you want to travel lighter, the Peak Design Outdoor Backpack 45L is the better call.