I recently purchased the Osprey Ozone 46 travel pack as an alternative to some other travel packs I had been using, mainly to get a little more space for winter gear.
In the past I had been using a Mountainsmith Parallax camera backpack for most of my travels and it’s worked well. But over the years I’ve started bringing less and less equipment with me and needing more space for clothing and other accessories. The Parallax has about 1880 cu. in. of storage space while the Ozone 46 has 2807 cu. In., so the extra space makes things great for stuffing in things like extra jackets, rain pants, etc. Items that I really had to pin to the outside of the Parallax to get it all to fit.
The Parallax has become my short travel, or day-to-day carry around bag for camera equipment as I still love the padding and customization available with it. And for longer trips, I still use the interior travel case that came with the Parallax for my Nikon D810 camera, I just don’t bring extra lenses or things like that, as I’ve found I don’t use them when doing most of my travel photography.