Does anyone have recommendations for a good backpack (day pack) that meets the following requirements?
Personal item size (17" tall x 10" wide x 9" deep; 20 liter capacity max.)... this will be in addition to my carry on.
Equally at home on rugged day hikes and sightseeing in cities (museums, cathedrals, historic sites in London, York, Edinburgh, Dublin, etc.)
Water bottle pockets and/or sleeve for water bladder
Hip belt for taking some of the weight off of shoulders
I'm not terribly concerned with "fashion" (if it's raining the day we tour a city, I'll happily wear my waterproof hiking boots regardless of how it looks!) but I would like something subtle and casual enough that it wouldn't look too out of place in a museum or cathedral. At the same time, I don't want a bag that's too "cute" and looks ridiculous out on the trails.
I've been looking at a few, like this Fjallraven and this Osprey
Anyone else travel like this, with seriously rugged hiking one day, beautiful old city streets the next? What kind of day pack do you use?