Its a cotton linen mix fabric, there's a round neck, 3/4 sleeves, side pockets and the easy fit shape, the hemline is where it gets interesting with a straight line at the front and it has a panel that does this, and then the back panels join to give the back a slightly longer look with a shaping in the hemline that gives a point of difference to the flow. We had this style in a lightweight cotton last summer and couldn't keep up it was such a great style.
These are a generous fit so drop a size
Size 12 - take a small
Size 14 - take a medium
Size 16/18 - large