Osprey Sojourn Porter 46L Travel Backpack Review (2027)

Maximum packers, longer-trip travellers and anyone who wants one bag to replace a checked case.

The gap between 40 and 46 litres sounds small and feels large on a longer trip: an extra outfit or two, a jacket, and room for the things that usually force a second bag. The Porter earns its place by offering that volume in a body that still fits most overhead compartments, rather than by asking travellers to check a bigger case. For trips beyond a week, or for travellers who pack heavy, those six litres are the difference between one bag and two.

StraightJacket compression straps are the Porter's honesty mechanism: cinched down, a partly packed bag rides smaller and looks smaller, which matters at the gate as well as on the back. The stowaway padded hipbelt and harness switch the bag between backpack carry for stations and duffel-style carry for bins and hotel rooms. Together they make a maximum-size bag behave like a smaller one on the days it is not full, which is most days after the first unpack.

The Porter's older shape looks plain next to the Peak Design and Cotopaxi, and its harness, while comfortable, does not match the Farpoint's framed system on long walks. The larger risk is at the gate: fully packed to 46 litres, the bag is the first in this guide to draw a strict agent's attention, and budget carriers may still require a check. Travellers who fly strict airlines often should favour the 40 litre Farpoint or the 35 litre Allpa instead.