Hi, the capacity of 3165 cu in, its in total or is just counting the principal bag of 22", without the day pack?
My husband and I went to Italy 3 years ago with two different sized Sierra rolling backpacks. I have NO idea what is the cubic inch capacity of the unit with or without the day pack. I just know that it served us so well that we are still using it for our current travels. With the daypack zipped on, it's a bit ungainly as a backpack; we moved the day pack to a "chest pack" to balance the load. Very good quality. by the way.
Not sure???? would guess it includes both pieces???
we have the 20100 which is much heavier,
i saw this one and think it is better. not sue if it fits in overhead on a plane with stuff in the removable pack.
but you can take the pack off. it is a bit difficult for me to out it back on quickly - but you can't get off an airplane quickly. I wouldn't want to put important stuff- camera, passport etc in the small pocket as it is too
easy to be opened by someone behind you in a bus..line.. wheels and backpack straps are good, and easy to
put straps back in their back zipperedd pocket
I have no idea about cubic inches...think about it like this - the larger bag (sans back pack) is the standard 22" wheeled bag that fits on any U.S. standard airplane overhead (wheels to back, handle to aisle) easily. It also allows for some 'give' sideways that's nice (but not really any 'give' vertically as would a zippered bag on the top. The backpack is slightly smaller than a typical backpack you'd buy for a high-school student - but roomy enough for a laptop to fit into. I think it's around 5" 'high' ....in general, if you're looking for this type of option, it's a stellar bag that has seen me through many international rugged trips + excellent without backpack on 1-day or 7-day domestic vacations.