Patagonia Arbor Linked Pack 25L vs. Boundary Supply Rennen X-Pac Daypack

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

Patagonia Arbor Linked Pack 25L

Front facing view of the Patagonia Arbor Linked Pack 25L
Capacity25 L
Weight0.45 kg
Dimensions49×27×13 cm
Airline fit92%
Price$79

Feature by feature

Patagonia Arbor Linked Pack 25LFeatureBoundary Supply Rennen X-Pac Daypack
Storage
N Compression N
None Expanded Capacity None
0 Opening 4
N Passport N
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
15in Laptop 15in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 1
Y Water Resistant Y
Material
600-denier 100% recycled polyester, 200-denier 100% recycled polyesterCustom VX21 X-Pac material

Boundary Supply Rennen X-Pac Daypack

Front facing view of the Boundary Supply Rennen X-Pac Daypack
Capacity22 L
Weight0.9 kg
Dimensions46×28×18 cm
Airline fit95%
Price$170

Key differences between the Patagonia Arbor Linked Pack 25L and Boundary Supply Rennen X-Pac Daypack

Both have: backpack straps, 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. 174 accept both. 0 accept only the Patagonia Arbor Linked Pack 25L, and 5 accept only the Boundary Supply Rennen X-Pac Daypack.

Only the Boundary Supply Rennen X-Pac Daypack fits

American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.

Patagonia Arbor Linked Pack 25L vs. Boundary Supply Rennen X-Pac Daypack: which should you pack?

The Patagonia Arbor Linked Pack 25L carries 3L more than the Boundary Supply Rennen X-Pac Daypack (25L vs. 22L), while the Patagonia Arbor Linked Pack 25L is the lighter pack at 0.45kg (vs. 0.9kg). For carry-on flexibility, the Boundary Supply Rennen X-Pac Daypack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Patagonia Arbor Linked Pack 25L; if you want to travel lighter, the Patagonia Arbor Linked Pack 25L is the better call.