I have a large black fabric (as opposed to leather) Healthy Back Bag. It's lightweight, foldable, and machine washable. It's more durable than it looks; I've had it for many (20?) years. Had the zipper replaced once. My only annoyance is that the strap slips off my shoulder with some winter coat fabrics; I might sew something with more traction to the underside of the strap to prevent that. If it's annoying me in that way I just wear it crossbody, which works fine except with a bulky coat.