I had shoulder surgery on one shoulder a few years ago, and am trying to avoid problems with the other.
This lightweight bag in "Blush" fits my needs.  It holds everything I need when I'm out for the day without being too heavy.

I was surprised that the zipper was longer than the opening at the top.  I didn't like having a loose zipper end and attached the zipper closer to the end of the bag to make it easier to close with one hand.
It's perfect now.  So, I'm looking at the other fabrics available and will purchase another in this style very soon.