The Peak Design Travel Backpack 45L is interesting because of how you can enter it, not just how much it can hold. Peak Design lists top, side, front, and rear access for the 45-liter model. The Amazon listing describes an expandable 35-to-45-liter design, creating a bag you can arrange around several different travel workflows.
Decide which opening does which job
Multiple access points help only when the contents behind them are intentionally placed. A side opening is useful for a frequently needed item; a larger panel is useful when laying out the entire load. Mixing those jobs can leave a carefully packed interior disturbed by every quick retrieval.
Before buying, imagine the bag both standing upright and lying open at your accommodation. The most useful arrangement is the one that lets you reach essentials during transit and see the rest while packing.
Camera storage is a separate decision
The 45-liter platform can be considered for clothing and camera equipment, but do not assume that a protective camera cube comes with every listing. Peak Design offers different purchase configurations, so match the exact bundle and included accessories to your intended kit.
An insert also consumes space that might otherwise hold clothing. Compare the whole system—bag, protection, camera equipment, and travel necessities—rather than evaluating the empty backpack in isolation.
Use the smaller state deliberately
Expansion can help on a return journey or a trip with an unusually bulky layer. It is not a reason to plan every flight around the largest available configuration.
The manufacturer's weatherproof-shell and zipper descriptions support outdoor travel use, but sensitive equipment still deserves protection appropriate to the conditions. Select this bag when the flexible openings and packing states simplify your routine enough to justify a more involved organization system.
