The pro runner ii series the next generation of lowepros widely popular professional backpack design is purpose built to organise and protect more gear and provide more options for manoeuvring in busy airports and crowded streets the pro runner bp 450 aw ii can carry up to two pro dslrs with attached lens such as a nikon d4s with 70 200mm f28 or 300mm 5 6 extra lenses one up to 300mm flashguns up to a 15 laptop 10 tablet plus wacom type tablet large smartphone pro tripod an