Think Tank's Airport Roller Derby bag features a customisable interior that holds up to two DSLRs with lenses attached or one pro sized DSLR with a lens attached, as well as additional lenses, flashes, and accessories. But of course, you can change up the orientation instead to cater to different kit such as holding a 400mm, unattached. Furthermore, you're going to need your laptop - This bag has two dedicated padded pockets that can accommodate a tablet and a 15"" laptop. Finally, this bag is easy to manoeuvre thanks to its improved weight distribution that minimizes muscle fatigue.