In this video, I’m putting the Peak Design Outdoor Backpack 45L and 25L side-by-side and answering the real question: what’s different other than size? If you’re a parent trying to pick one bag that can handle family travel, a day hike, or even a camera + kid-stuff combo, the details matter way more than the liter number. I walk through how each bag fits the “day pack” vs “one-bag travel” role, and what kind of load each one makes sense for. I also talk about how I’d actually build out each backpack with Peak Design’s ecosystem—Camera Cube V2 for camera carry, and packing cubes for keeping the chaos under control. My goal is to help you choose based on your use case: quick outings and lighter carry with the 25L, or more space and flexibility with the 45L when you’re packing for longer days or travel. By the end, you’ll have a clearer idea of which one matches your routine and whether you’re buying a daily bag or a do-it-all outdoor/travel pack.