Forgive me because I still can't figure out how to post images here but here's a link:
Just on a daily basis I wear this Uniqlo x Lemaire bag that has zippered sides (you can unzip the thing into BY FAR the largest bag I've ever seen). When you wear it all zipped up, it's a really dignified look but you could still carry a whole day of groceries, 4 books, and a bottle of wine in there (yes, these are the usual contents of my bag)..