Here are some photos of what's in my Selma messenger medium. I forgot my keys, and used my phone for the photos, but they also fit in the bag along with the rest of my things.
It fits my MK continental wallet, my keys, my Samsung S5 phone, my travel umbrella, mineralpowder and vail from Bare Minerals, mineralveil,- and powder brush, my lipgloss and my Gucchi sunglasses with case.
Quite roomy to be so small, and still there's room for more.
First out is the empty bag, then all that fits in it and at last the bag closed up with all the items inside.