A onesize tunic with two zips at hem line.  Sleeves to wrist with a crew neck.  Slightly shorter at the front than the back.  Comfortably fit to a size 16/18
 
Measurements 
Length Front from neckline to hem:  approx 26.5"
Length Reverse from nape of neck to hem: approx 33"
Underarm to underarm across the bust: approx 33"