I have super duper back problems, have to use a rollator and decided to look for a bag or 2 that is cross body style and lightweight.  This, among others, fits the bill but the strap is adjustable if you want to use it as another style.

My purse measurements are: approx 11-1/2" w x  7" h x 5" d, all measured between the seam bindings.  There is an outside zippered pocket on each side of the purse.  There's a 7-1/4" inside pocket, the kind that is attached by stitching only at the top - makes it easier to get things out.  It's white nylon(?) like the purse lining.  Then, there's a cosmetic pouch the same pattern as the purse with a waterproof lining.  It's Approx. 6" h x 7-1/2" w.

Many beautiful patterns to choose from and I can't imagine anyone not loving this style.