This model can be made very simply with no arms or with arms if you fancy making a couple of button holes and sewing on some buttons.

"No problem," the tailor said, "just hunch your back, bend your arm, walk with a limp, and stick your fingers through the button holes and you'll look just fine!"

Check that the closure is tight when buttoned. There should not be puckering of fabrics around the fastened buttons. Such puckering would mean unleveled sewing of buttons and button holes.