REI Co-op Ruckpack 28 vs. Topo Designs Mountain Pack

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

REI Co-op Ruckpack 28

Front facing view of the REI Co-op Ruckpack 28
Capacity28 L
Weight0.8 kg
Dimensions50×28×23 cm
Airline fit72%
Price$130

Feature by feature

REI Co-op Ruckpack 28FeatureTopo Designs Mountain Pack
Storage
2 Compression >5
None Expanded Capacity None
1 Opening 2
top Passport top
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
Y Sternum Strap Y
Inside
15in Laptop 15in
3 Main Compartments 3
Y Organizer N
Outside
× Hard Shell ×
Y Rain-fly N
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
Recycled nylon shell frame: Rigid foam1000D exterior, 210D coated pack cloth liner

Topo Designs Mountain Pack

Front facing view of the Topo Designs Mountain Pack
Capacity30 L
Weight1 kg
Dimensions48×29×18 cm
Airline fit93%
Price$180

Key differences between the REI Co-op Ruckpack 28 and Topo Designs Mountain Pack

Both have: passport pocket, backpack straps, hip belt, sternum strap, laptop sleeve, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 136 accept both. 1 accept only the REI Co-op Ruckpack 28, and 39 accept only the Topo Designs Mountain Pack.

Only the REI Co-op Ruckpack 28 fits

Great Lakes Airlines.

Only the Topo Designs Mountain Pack fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Regional Express, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, Xiamen.

REI Co-op Ruckpack 28 vs. Topo Designs Mountain Pack: which should you pack?

The Topo Designs Mountain Pack carries 2L more than the REI Co-op Ruckpack 28 (28L vs. 30L), while the REI Co-op Ruckpack 28 is the lighter pack at 0.8kg (vs. 1kg). For carry-on flexibility, the Topo Designs Mountain Pack fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Topo Designs Mountain Pack; if you want to travel lighter, the REI Co-op Ruckpack 28 is the better call.