This pocketbook is large enough to hold everyday needs, yet small enough to prevent back problems because it does have a limit to how much you can stuff in it.
This purse can be made with a drawstring closure or closed with a small piece of hook and loop tape by adding elastic to the casing that would have been a drawstring.
Experiment with different fabrics to have the results you want. Save scraps from clothes you sew to make a purse for every outfit.